I feel like im pooping razors and i cant do it bec. of the pain whats wrong and how could i treat it ??

Anal fissure: You most likely have an anal fissure. The initial treatment for that is symptomatic. First, take stool softerners to prevent hard stools that require straining. Take a sitz bath everynight. There are over the counter medicines that contain 3% lidocaine that can be used. One brand name is Ana-Lex. If your symptoms continue for more than a week doing this type of treatment, you need to see a Doctor.