Thank you all for all of your prayers and comments! I called my OB this morning and got in for a check just to put my mind at ease. The baby's heart rate was still strong at 160. Turns out, though, that I have an infection. The only thing I can think that would cause that is all the sugar I've been eating. Before I got pregnant, I was eating an anti-inflammatory diet, which meant I had no sugar whatsoever. Well, I've been a bad girl since getting pregnant. I have been sucking Jolly Ranchers to get rid of nausea, eating chocolate zingers (a childhood favorite), and loads of honey mixed in with peanut butter every morning. I guess I'm going to have to wean myself off of all those goodies.
I'm so glad that everything is ok with the baby. Those were a scary few days! It's so hard to be calm when I know that I've had 2 miscarriages before. I pray that this pregnancy continues to go well and that we get to meet this little one.