Help please been told I could possibly have a missed miscarriage 😭


So we went for our first scan on the 20th of March where I thought I would of been 6 weeks 3 days they said I was measuring anywhere between 4 to 6 weeks, there was a sack and yolk sack but no fetal pole. Todaay I went and should be 8 weeks 3 days since LMP but I'm measuring arou d 6 weeks there is a fetal pole now and measuring 3.6mm no heart beat. We were took in to a room and prepared for the worst we need to go back next Wednesday 😭can anyone please tell me if we still have a chance? Could I of just ovulated later and baby is measuring behind? Surely some growth is better than none?