Yes, I convinced myself that I had a missed miscarriage because my boobs stopped hurting and I wasn't nauseous for a day. I checked for blood every time I went to the bathroom;
I instantly felt so connected to my baby I couldn't imagine how I could handle losing s/he.
I saw the heartbeat after that scare and it really made me feel better, still worried but feel a lot better. I guess we'll be worrying about our babies our whole lives. Might as well start now :)