I am 5 weeks also my hcg levels went from 3,240 then 4 days later to 3,600.... I am concerned because they did not double. We have the same nember jgo are yours still doubleing?? I go for my first ultra sound this wed. oct 8 to make sure everything is okay....keep me posted with your pregnancy!
Every pregnancy is different, so there are so many norms, I think your numbers sound ok, was it like a week or just a couple of days in between lab work. if it was just a few days, your level might have been 540, that sounds more right, but a week or so 54-3600 sounds right too, The important thing is they are going up! Also if this is your 2nd pg your uterus can grow at a faster rate seeing as it knows the drill which can cause you to have a baby bump a little early! plus you are probly bloated! OH the joys of pregnancy!!