Question. Please answer.

Jasmin💕 • 19. Had a prince(12/11/2015). First time mom.
Okay so I'm 34+5 days and I'm not sure what's going on. I can't even walk without my left leg hurting. Its a sharp pain in my lower back and if I even try to lift my leg up its like sharpness and pulling. It hurts so bad, it makes me cry. I can barely walk. The nurse told me to just take Tylenol. What is wrong? Opinions please.