It might be a urinary tract infection or just frequent bladder urges. Both are common.

You really should talk to your doctor. In the mean-time, drink a lot of pure unsweetened cranberry juice or take the cranberry pills. It helps keep your urinary tract clean and even if you don't have an infection, its still good for you and won't hurt at all.

Also apple cider vinegar pills works quite well

But above all see a doctor!!

Best of luck my dear