Pain relievers/natural remedies?

Ok so the more research I do the more freaked I get. They say Tylenol is ok but I saw it listed somewhere today as a category C not category B. I just want to do the best thing for my baby. What are your natural remedies to help with cramping and back pain? Am I just overreacting? I get freaked out by the amount of chemicals in everything these days- I can't imagine how I'll be about what I actually will give my baby once it's born. I'm trying to switch to hormone free and organic meats now as well.