Newmommy, You definitely should see a rheumy and have other auto immune issues eliminated or hopefully not confirmed. I also have Hashimotos and it really plays an intricate part in fibromyalgia. I have a tendency to go up and down on my TSH. I do fine on a specific dose for a while and then I'm going hypo and have to change dosage. Do you have a specific range for your TSH that you feel best in? That plays a big part in your joint pain. My rheumy diagnosed me with Connective Tissue Disease. He treats my joint pain with low dose prednisone right now. However, my joint and muscle pain is so much better when I keep my TSH under or at 1.0. Anything creeping up over 1.5 and I'm fatigued with ever increasing joint pain. We all have different set points of what makes us comfortable. As a new mommy you get plenty of exercise, but just moving around to keep things from stiffening up is very helpful. Like ladybud said you really need to eliminate other problems to be sure it is fibro. Oh, by the way do you take a synthetic thyroid med or a natural. I take armour natural thyroid, it works best for me. I had a difficult time with synthroid.