I went in on Friday to the ER due to severe cramping. They drew my blood and tested for the HCG levels. They said it was at 1,888. They wanted to do a recheck on Sunday after waiting 48 hours. Well, my HCG came back at 5,326. My sac measured at 4 weeks and 3 days but I'm supposed to be around 5 weeks+. They didn't see a yolk or fetal pole and said it's normal when you're that early on. Anyone else experience this and end up with twins? I swear I thought I saw two sacks on the ultrasound, but it could've been something else. I'm kind of freaking out. They wont do another ultrasound until I hit 8 weeks.