Could I be pregnant?

Lyndee • TTC again! Lost my daughter at 19 weeks

Okay ladies soooo I need some advice or insight please!! No negativity please!! I am currently 3 days late but I tested at home and it said no.. I’ve got sore boobs and I am sleepy all the time now yes I know those could be period symptoms too.. I lost my daughter 12/24/18 at 19 weeks and my fiancé and I have been trying to get pregnant so idk what or how to feel or think.. I am really confused.. someone told me that it could be reading negative because of low HCG levels.. my mind is everywhere!!

UPDATE: I am in fact pregnant! I am excited and scared all at the same time wish me luck!