Pregnant .. after 3 miscarriages quadrupling hcg

Sophia • Wife . Dog mum . pregnant with our 🌈 baby

Hi everyone

I found out I’m pregnant pretty sure I implanted last Saturday. Had a very faint positive test on Monday. By weds had a positive digital test and had an hcg blood test drawn which was 35. Had my second drawn on Friday and it was 147. That’s more than quadrupled in 48 hours.... could this be twins ?