Hi, I believe I am 5 weeks 5 days with a very unexpected pregnancy after 3 years ttc.
I had my first blood test at 16 dpo and it was 96,2nd at 20dpo was 343 ( so just about doubling ever 48 hours.) 3rd at 23 was 727 so had slowed down but still doubled in 72 hours. Had a scan the next day (Friday) and they could just make out what they though was a sac but it was very small but she said that was normal with my hcg levels being under 2000. Anyway they said I needed another blood test but exactly 48 hours apart this time so I had one yesterday evening.
The doctor has just called me and it's only gone from 727 to 916 in 48 hours. The Dr didn't seem concerned as it's still a rise but I don't think it's looking good at all 
The thing is I have a Ds (5) and my hcg levels were never massive with him either although the first two I had early on doubled if I remember correctly. I know at 7w 5 days with him my hcg was only 7000 and he's a strapping,healthy 5 years old.
I don't know what I'm asking really,just after other peoples experiences good or bad. Is it possible some women just have low,slow rising hcg pregnancies? Everything I'm reading on the web makes my levels sound tiny but as I say they weren't mega high with my Ds.
Sorry for ranting I feel numb.
Should also say no bleeding at all and only very mild period type cramps occasionally which I also had in 1st pregnancy.
Thanks.