Hello, and I hope I can help you today. Many women can miscarry naturally, meaning pass the fetus at home and have no medical consequences afterwards. However it is important for you to know that all the tissue has actually come out of your uterus, because even a small speck of pregnancy tissue left inside you can cause you to bleed irregularly, put you at risk for uterine infection, and prevent you from being able to get pregnant again until it is removed. What I would do in your situation, is buy an over-the-counter urine pregnancy test and retest yourself right before your doctors appointment. If your pregnancy test still comes out positive I do recommend that you follow up with the doctor. This is just to make sure that all of the tissue has come out from your miscarriage and that there are no complications that will affect you in the future. Furthermore, 15% of women bleed in the first trimester of pregnancy, and even though you had a lot of bleeding there is still a possibility your pregnancy could be viable. I hope I was able to adequately answer your question today, and that my advice was helpful. Best wishes, Dr. Brown