Sickness

Wondering if I’m pregnant since I’m 4 days late, feeling like I have a cold, and a bunch of other symptoms. I don’t want to read into these, but got a negative yesterday and was bummed. If I wait and get a BFP later on in the week, does that mean it could turn into a miscarriage? Has anyone been a week or more late with negatives and then bam a BFP and went full term? I’m so nervous since our last ended in MC. Help!