Urinary Tract Infections are very common in women. It is basic anatomy unfortunately.
When urine sample is 'dipped' by health professional, it will show up if infection is present. It does NOT however, show the bacteria causing infection.
Medical guidelines are, unless pregnant or allergic, Trimethoprim 200mg twice a day for 5 or 7 days. (correct me if I am wrong please!)
The urine sample is then sent to laboratory for M C and S.
M - micro-organism (bacteria/germ/bug) causing the infection
C = culture, which means a few cells are grown in the laboratory in controlled environment
S = sensitivity. That is, the lab can check what the bacteria/germ/bug is sensitive to, (what kills it!) and also what it is resistant to (what doesnt kill it!).
When the Doctor or health professional gets the results from laboratory, they will be able to accurately check if Trimethoprim is the correct antibiotic for you.
Sometimes Cefalexin or Nitrofurantoin are prescribed instead. There is also a newer antibitiotic recently on the scene, cant remember what it is called though.
Always make sure that you read the leaflet. Especially how and when to take the medication.
Sometimes just taking it with or before food as prescribed, can prevent the horrible side effect of nausea and eggy taste in mouth.
Sorry to ramble. But I see so many urine infections DAILY and a lot of us dont have time to explain this to our patients.
Increase fluid intake a LOT... water preferably. Take pain relief - again READ THE PATIENT INFORMATION LEAFLET!
And, finally and most important for women, wipe backside from front towards the rear after a bowel movement (after a poo!).
Bacteria can transfer into the urinary system no matter how clean you are and female anatomy lends itself to ease of transfer.
Pass urine before and after sex and dont use perfumed soaps on your 'bits'.
If your symptoms persist after three or four days of antibiotic therapy, go back to doctor. You may need a different antibiotic.
Also, get another urine speciment check 3 - 5 days AFTER finishing the antibiotic to ensure the bug has actually gone.
Hope this helps and please, feel free to correct me!