I do the exact same thing! I am 3 months postpartum and I am obsessed with my health. I go to the ER once a week and nothing is ever wrong they always send me home stating stress and anxiety. I had this before I had my child too, but had it under control until I gave birth. First I was anxious about the baby and then I became obseesed with every ache, pain, or feeling. I have thought I had cancer, anyeresm, blood clot, tumor, MS, heart failure ect... I can't get off the internet I obsess over my symptoms and look them up always bringing up horrible things. I just recently went to the doctor who was checking my heart and they actually think that I might have postpartum cardiomyopathy! I was like oh my gosh I am not going crazy. But now I am obsessing about that looking it up all over the internet. I am on zoloft, xanax and trileptal. Why can't I stop obsessing over my heath? I know it is making it worse, if there is something wrong with my heart then me being anxious and depressed and obessive is going to make it worse. Help the internet is bad but I can't stop!