Thanks for the response. I'm sorry for your loss, too.
I actually got my +blood test on Tuesday morning, and the miscarriage started Tuesday afternoon. I had a -HPT by the next morning (yesterday), and the bleeding is very light today. I'm assuming everything has passed as it should. The doctor had scheduled an ultrasound for me for this afternoon, when I was still pregnant. I talked to her when I started my miscarriage, and she said that I should still go to the ultrasound. So I'll be doing that this afternoon, and then my doctor will be calling me. She did mention that she might do a second beta draw, but I'm feeling pretty confident that everything is occurring naturally, especially since the HPT is clearly negative now.
I always try to look at the positive side of everything, and I am grateful that this happened so early in my first pregnancy. Thanks again for your response.