Pain in lower abdomen...maybe kidney stone?

i have a pain in my torso or abdomen when i have to pee or when i have to pee and lean back in a chair. it feels like something liek muscles are being ripped..........i think it might be a kidney stone or something with my sphincter muscle idk vcause it hurts tooo like whn i push pee or tighten my abs i guess. so any help?