Hcg not good

Tarah
I need some positive thoughts & prayers 😭 I'm currently about 20dpo roughly 5 weeks maybe less definitely not more. I had my first hcg check on Wednesday it came back at 87 then less than 48 hrs it was at 100. Increasing but definitely not doubling. I had my third hcg draw today & won't know the results until tomorrow. Is there any chance my pregnancy can still be viable with numbers that low? :( I'm 26, third child, no miscarriages.Â