Can i still have a normal pregnancy with an abnormal gestational sac? 5weeks 2days levels 4000 not doubling2500 to 4000in3 days possible see fetalpole

Possibily: When you are this early in pregnancy, things may seem abnormal, but end up being perfectly fine, given time. HCG levels "normally" increase by 66% every 48 hours. However, nothing is written in stone, and I have seen less then normal increases, and not so normal ultrasounds produce normal pregnancies. You need to have your ultrasound repeated in a week from your last one. Good luck!