Super early pregnancy TW! Low hcg

Lauren

I just got my results from when I was 3 weeks 4 days and it was at a 22.2 .. got yesterday’s results when I was 4 weeks and now it’s at 27.5 .. has anyone found out super early they were pregnant but didn’t have doubling numbers this early?? My tests are getting darker and I’m having symptoms like crazy.. I’m just so nervous