Hi My Name Is Mauricio. I Got Surgery 2 Weeks

Hi my name is Mauricio. I Got surgery 2 weeks ago. I had appendicitis so They Took out my appendix. Me and My Best friend planned for awhile now to smoke weed on her birthday. My wounds don't hurt at all anymore. I want to know if I am able to smoke weed again? Or will it cause harm to my body. Her birthday is in a week :/