it hurts verrryyyy bad

So today I've had to pee a lottttttt. I thought it was a UTI but then I stretched the muscle like my lower stomach upper vagina, like where my bladder would be. I kinda leaned back and felt my bladder pull really bad. It felt like my bladder was stretching kinda. It really hurts every time I stretch like that and I have been having pains in my bladder/ lower stomach all day. Please comment for what you think this is or advice