I'm 21 weeks today, and I started bleeding this morning. I still have my period, doc said it was okay. But not supposed to have it for another 2-3 weeks. And tonight, I noticed while I was lying down, I had some discomfort in my stomach. Sitting up was worse, and standing almost brought me to the ground. I heard my baby's hb tonight with my fetal doppler--it's my first pregnancy, and I'm clueless. My mom esaid sleep it out, and see what it's like in am. I need help, what should I do?