Normally they compare from one day to 2 days later... It is supposed to double... If the rise is very slow then maybe you want to check with your doctor... It could be totally fine so dont stress too much but keep an eye on it :)
Like the other ladies said, keep an eye on it, it should start doubling every 2nd day, I remember i was having my bloods done twice a week to make sure the hcg levels were rising. My doctor thought i was mad but i didn't care, i wanted to do it for my own peace of mind.
I am surprised that your doctor has not performed u/s yet as your HCG levels should be between thousands by now if u indeed are 7wks... however if ur dates are off could be possible u r measuring weeks behind as ovulation and conception can happen at different times.... i would recommend you speak to ur doctor as soon as possible and ask for further assistance.
Try to relax and wait and see. Hopefully everything will be okay. My levels were very low at the beginning and slow to rise, but I am now 28 weeks pregnant. Some babies just start off slower.
My other 2 pregnancies my levels were rising perfectly and they ended in miscarriage. So numbers don't always mean something.
My doctor was sure that my slow rising levels this pregnancy was a bad sign, and all is well!
Hang in there :)
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