6weeks 2 days

Michelle
So worried went to the doctor today to have a ultra sound to see my baby for the first time. I should be 8 weeks and 4 days by my last period. But I am mesuaring 6weeks 2 days. No heart beat. I am freaked out my doctor acted weird. They took my blood and I go back Thursday for them to take more blood to check the HCG. With my first child I had my scan at 7.5 weeks and they found the heart beat right away. She told me not to worry because my periods have been iragulaer because of breast feeding. But she told me the signs of MC and to watch for them. I go back on the 7th for another scan. This is going to be the longest 2 weeks. Anybody els have this happen to them?