I've been having heart rate problems ever since the last few weeks of my pregnancy, my average was 123, the normal average is between 70 and 90, and the highest mine has gone was 194. My doctor thought it was either an overactive thyroid or something with my heart valves. But I went in for testing today and I have graves disease, I'm fine as long as I take my medicine, but it's Inderal and it can be passed into my milk and digested by my son. They've done a few studies, but they're still not sure if it's ok for the baby or not, so I can't breast feed anymore. I'm having radioactive testing done on the 28th, and then one more set of tests after that. I feel like I've been defeated by my own body. I know it's not really my fault, but I feel like a failure. and the worst part was that I can't have another baby as long as I have this. The graves disease can go away for good, go away and come back, or just stay forever. Before I was pregnant, I just had an overactive thyroid, but being pregnant turned it into graves disease. as long as I have it, I have to take the medicine and not only can the medicine transfer through breastmilk, it can also transfer to the fetus. It broke my heart when I heard that and I started to cry. so now not only can I not breast feed my son, I might not be able to have another baby. Just as I was starting to get the confidence that I might be able to do this I get this huge blow. Thank you all for the support and encouragement, but unfortunately it's back to formula for me. All of you have given me so much hope and I wanted to thank you all.