I think I had fibro for a few years before my 2nd pg. While I was pg. I felt fabulous -except for back pain. Once I had the baby, about 3 months later, the fibro came on full blast to the point I fell while carrying the baby, could not do stairs unless I held the railings, etc. I have since been diagnosed finally and use exercise, various pain med and flexeril to control things. I looked up flexeril and it is a pregnancy catergory b-meaning it should not harm the pregnancy, but talk to your doc about it or look up your meds on webmd or cvs or something for more info. Best of luck