Hi, that's great you are finding the pelvic floor PT helpful. Usually, with IC the bladder pain improves during urination and with a UTI it hurts a bit more during urination. The most common way IC is diagnosed is through cystoscopy (looking into the bladder with a scope and under anesthesia). Then they do what is called hydrodistention (instilling liquid into the bladder). The hallmark for IC would be blood seen by the dr. when this is done (again, you would be under anesthesia and would not be aware of any of it). Before that is done, though, they would still test your urine to be sure it was not just an infection. I encourage you to see a urologist if this continues if you haven't already. I say all this as a retired RN and as a pt with IC. The pain started for me in my 30's and as I am now over 70 it has decreased. (I was told this is often the case that the pain decreased after age 70). Best wishes to you.