Is There Any Problem Of Mixing Antibiotics, Steroids And Smoking Marijuana?

Obviously marijuana is illegal, but I need a straight answer. I am on 500mg Amoxicillin antibiotics, and 10mg Prednisone steroid tablets. Would it ACTUALLY do any damage to me if I mix the antibiotics, steroids, and smoking marijuana? When I say smoking marijuana I mean about 4 inhalations of it, not any more than that.