so I went to the hospital just couple days ago and they did blood work my hcg levels was 55 but i was only 3 weeks and couple of days im worried so I went to my doctor today and they measure me from the first day of my period that would make me around 8 weeks but if they did it from my last day of my period that makes me 4 weeks today she said that my hcg levels are really low that my Pregnancy might not be Progressing but she sent me for blood work any one had this problem before with a pregnancy