Low hcg at 4 weeks

mamaof3

Hello! I posted a few days ago with my faint positives, then started bleeding badly at 10 dpo (full period strength but no cramping, still bleeding 5 days later. Doc did blood test and my hcg is 13. I would be exactly 4 weeks. Checking again in 48 hours. Anyone have a similar situation and go on to have a viable pregnancy? Looking for our rainbow after losing twins at 17 weeks🌈