I’ve been testing daily for like a while. I’m

Now 2 days late for my period. Got a faint positive Saturday night. All negatives since and it’s almost Tuesday. No bleeding at all. I thought I had a few specks of implantation blood on the 7th and it was just when I wiped. My hcg was at a 3 Friday. I’m wondering if it had doubled Saturday, but wouldn’t I continue to get positive tests if it was increasing? Am I just really early still? Chemical? What’s everyone’s experiences? Thanks in advance. I’m just worried.

I’ve had cramps off and on and a headache. I’d be almost 4 weeks going back to the day of my last period.