Positives and Negatives

Ca

I received a very faint positive a FRER on Sept 8(day of due period) and when I took another on Sept 9 it was still a very faint positive. Well I took another and now it's negative.

I'm still without a period. I've had no spotting. Tomorrow I'll be five days late. I'm so confused. Based off my LMP I should be 4w3d.

With my oldest I got a positive at 5 weeks and with my youngest I got a positive at a week late(I was 5 weeks when I got my positive). Maybe they are just super faint lines because my HCG isn't raising super fast and I have to wait till 5 weeks for a in your face BOLD positive?

Anyone be through this and what was your outcome?

Any help would be great