I have lower right abdomen pain when I urinate, and when I walk around. I recently had a UTI, and finished 7 days of antibiotics yesterday (trimethoprim). It is definitely pain in the abdomen and not in the urinary tract. What do you think this might be?
I think that the pain is due to cystitis which is a part of the urinary tract infection that you have mentioned. The urinary tract extends from the kidneys in the upper posterior abdomen, through the ureters, into the bladder and out through the urethra. What you are talking about is the urethra only. But the infection could extend into all these parts, especially the bladder, and could indeed be the source of your lower abdominal pain. I think that the abdominal pain during passage of urine is due to this infection. Since you have already completed the course of antibiotics, please Chat Doctor.  Still, it might be worthwhile to mention the symptoms to your treating physician and get his valuable opinion.