Im suppose to be 9 weeks or so pregnant with my 2nd baby, 4 days ago I had an ultrasound that showed a 6 and a half to 7 week fetus but no heartbeat, yesterday I started bleeding light no cramping, the on call doctor said not to come in unless severe bleeding and/or intolerable cramping and will do ultrasound Thursday.. Is it possible if I did lose this baby that if I continue to have unprotected sex that I could get pregnant again?