Please tell me this is my rainbow baby!

Angel • Wife:5 year old son👦🏼 and a rainbow baby on the way!👶🏼 🌈

After a miscarriage in August could this be my rainbow baby? AF is due the 18th and I just took this!.. BFP or not!

Update: I got my blood drawn yesterday and my levels came back at less than 1??? I don't understand??? What happened