Headache for 2 weeks. Left side, floaters, pain medication not working.

Hi Lucy, a couple of things worth mentioning are that it's possible to over hydrate, one of the symptoms of which is headaches, ironic, huh(?!). If I stop drinking lots of tea, or don't have any for even a day, I get horrific headaches. I also, finally worked out that I'm allergic to my cats, if I don't use my prescribed steroid nasal spray, I revert to having continuous headaches. Some people get them from food allergies, too. It can simply be a case of working out what's going on. Hopefully, they'll simply stop, never to recur.

I would have a similar reaction to the smallest amount of alcohol. 

And also chocolate, coffee, curry spices, pineapple, ginger .... 

Worth th eating a bland diet and drinking only water for a week to see if that helps. 

I had the same thing happen to me this Sunday (7/3/2016) I was working out and had a sharp pain go from my left temple to the right. WOREST PAIN EVER, i thought mabe i was pushing myself to hard, so i wen thome to relax, got no relief, still had stabbing pain in my left temple, when i could no longer take it anymore I went to the ER had a CT Scan and they found nothing wrong, thye asked me about my sinus, i told them i have Sintuis that i had just got over it a month or so ago. SO they put me back on a Cpak, gave me sinus meds, and told me to come back if the pain gets worse.  With the process of finding out what is wrong with me has been a process, between changing pillows, no sweeteners, and working out slowly, it is very trying, fearful, and depressing. But I am very greatful for this site to express what we all are going through.

I should add that, if anyone ever gets a HORRIFICALLY bad, sudden pain in the head, one that goes from not there to horrific in just a few minutes, or even the horrific pain simply snaps on, like a light going on, go to A&E (or the ER, in north America). I had this, in 2012, it was what's called a 'thunderclap headache', I was terrified, I went to A&E. The next thing I remember, it was six and a half weeks later. I'd had a subarachnoid haemhorrage, from an aneurysm I hadn't known about. The statistics of surviving, without serious disability, was one to four, or 50% chance of death, 25% chance of severe disablement. I nearly didn't go to A&E, my daughter insisted, thankfully. I have MS, diagnosed in 2004, and I've been bloody lucky, re the sub arach. Unfortunately, lightning does sometimes strike twice. I'm not kidding about the fact that the pain was incredibly bad, and it's a very unusual start to a sub arach. too.

Try a cervical pillow and see if it helps. I use a Tricore standard firm and it elimininated my headaches and weird symptoms overtime. A neuro recommended it after I had been to countless doctors and had many many tests done. Get well soon.