3 days late

I use Flo to track my periods, I’m quite regular sometimes early after coming off contraception in September last year as I was on nexplanon. I’m 3 days late now.

Me and my partner have been actively trying to conceive and I don’t know if I’m getting way ahead of myself.

Symptoms: Sore breasts, minor cramping since Monday, no bleeding, nausea and bloated along with high libido.

I did an early detection test on the first day of my missed period and had a faint positive line but I did a test this morning and it showed as negative.

I’m a bit worried I’ve got my hopes up, and when I’ve looked into it, it could be a chemical pregnancy or potentially I’ve drank too many fluids the night before. I do tend to drink a lot of water at night.

I suppose my question is, has anyone else had any similar experiences?