peeing frequently, lower back pain and disconfort in groin areas, specialy the right side

I envy you your low PSA score! I have a diagnosis of Prostate Cancer (Gleason 3+3) but don't need treatment as it hasn't developed over several years of active surveillance. My PSA has hovered around 8 for a while now. I doubt you have cancer with such a low PSA score, but even if you had it is likely to be of the mildest sort, which, depending on your age may well not need treatment. We'll probably die with it, not from it (as they say).

PSA is almost always high I believe with prostate disturbances.  In truth if it dropped from 4.5 to 1.6 you're laughing (but take uro's advice).  Mine was 16.9, then 9.6, during some disturbances (like yours), 3T MP MRI said 4 out of 5 dodgy area, had transperineal MRI-targetted biopsy clear and later Holep samples clear too.   2 months later PSA was 0.7 where it stayed.  Those are modest values really, and the velocity is negative - take uro's advice but no reason for anxiety at all from what I know.  Only a uro can try to diagnose (seems hit and miss to me).

As a rule, if PSA is low you definitely don't have cancer (pedants love to point out that you might have early stage cancer, but really, you might without any PSA test at all ... the PSA test having a low result means you are less likely to have it than one never tested at all, as the high PSA cases, among which a few P Ca cases lurk, don't include you !).  If 3T MP MRI result is good (not 4 or 5 out of 5 on that stupid scale), it's good, even if the PSA was high.  But if your 3T MP MRI result is bad (4 or 5 out of 5 on that stupid scale), or your PSA is high, even 17 like I had, the information content is that is very poor - it seems to really often mean a disturbance like inflammation or prostatitis.  You should be just worried enough to do what the uro says in terms of further tests or watch and wait then test again .... but not worried beyond that.  I was worried witless.  Only time I cried in public since age 8.  But, I now know, high PSA commonplace and nothing to worry much about.  And yet, don't ignore it.  Yours however at 1.5, with negative velocity to boot, is not high at all !  (below 2.5 is NORMAL for men age 50 or less, and for older men below 4 is NORMAL too).  Do take whatever action or tests the uro says, to the letter, but certainly don't worry, IMHO. 

I had turp done two times and once greenlight therapy. So all together, three surgeries.  My last surgery was a year ago,and after the surgery, I couldn't urinate on my own, so my urologist, had me self-cath.  It was the best idea since my problems with my prostate and bladder.  Now I can empty my bladder completely and it feels like  I have a young man's bladder.  I can go for several hours without looking for a restroom!  I hope you don't have cancer, but if you do, prostate cancer, usually is very slow growing.  My urologist, told me that on average it takes 13 years for the cancer to become life threatening.  Most guys, die of other causes, other than the prostate cancer.  What I have been doing eating apricot  seeds, 5 a day.  The B17 in the seeds, are a big help in keeping the body from getting cancer. A video, I saw suggest that cancer is much like scurvy.  It's a deficiency in a certain kind of vitamin that causes the body to become cancerous.  With scurvy, it was a deficiency in vitamin C.  Many sailors, used to die from it, while at sea.

Ever since my prostate cancer scare, and a similarly daft stomach cancer scare later the same year (an acute problem that later just went on its own, after 3 months of marked symptoms), I used them as a springboard to make some changes : I buy cheap mixed fruit and vegetables from the supermarket at closing time, liquidise and freeze some others go in fridge, and i later drink the anti-oxidant-rich "gloop".  I try to also eat plenty of nuts (the phylates...). The gloop is of variable palatability but cancer when it has killed friends and family (grandad pancreatic age 48, uncle skin age 38, best friend testicular age 43, sister in law breast age 59, good friend stomach age 48), has seemed very unpalatable in its final two weeks, so it is worth grinning and drinking the gloop.  Often heated and used as source on other cooked veg (strangely it is more palatable that way ... purists would never heat it much but what the heck), or eaten with say some garlic bread.  Also cut down on red and especially processed meat if you can and quit smoking.  Turn the worry about cancer, which in one form or another will kill half of us before we die of other causes, into a positive.  NB you don't have to take your vegetables and fruit as liquidised gloop, that's just a convenient form in which to freeze it  in little plastic cups or whatever (defrost a couple a day) if your local store sells a lot off at 10p (=13 cents) a pop around closing time every now and then, and you find yourself with a large amount virtually for free.  I confess having given bacon up at first, I have been having bacon sandwiches as well lately - been restoring a big old house from the ground up for the last 5 months whilst also doing a full time (office/home) job, and the cafe next door is rather too convenient when pressed .. but once the house is done, no more bacon. 

Apart from slightly raised PSA on routine check-up. my first symptoms have been night-time waking to urinate - up to to 4 times a night. I also got urine retention after 2 general anesthetics later on.  I'm now down to once in the night.

Man you need a specialist fast prostate probably has gotten larger damn things aren't the same for every man but the pain you are suffer indelt with get to a dr fast as delayed just makes things worse I feel for the poor healthcare some folks get but I dragged my feet for years and it reall cost me hd Turp June 17 friggin nitemare still and now I think I have retore a surgery fixed fistula damit

Don't panic. Very slight chance of PCa with these results. I have had PCa for 15 years now , no treatment the first 10 years, intermittent hormone therapy for the last 5 years. Bone pain not related to cancer (no metastases), TURP last year, not useful. Now urinating is pain in the ass (literally), I self cath but suspect prostatitis too. Where do you live? I am in France.