help!

Percilla

I had my quantitative checked earlier this week because I had some light pink spotting when I wiped twice anyhow my numbers were 9468.35 and 48 hours later only 14387 it didn't double i had an ultrasound and their was a HB and fetal movement but I've had several misscarrage in my life last being October 24 2017 this is our second time trying this round of ttc I have 3 beautiful children to my late husband passed April 26, 2017 but my bf has none:( anyhow I need opinions to rest easy or expect the worst I'm posting a pic of the HCG tracker and what it says as well any input would be greatly apriciated also I'm on prometrium for a low progesterone which I've always had with every pregnancy lost or to term except for my daughter and I was also diagnosed with BV (bacterial vaganitis) at the er visit as well maybe that's causing problems to idk what do you all think and thank you for your input in advance;)