It seems like a lot of us have had late periods this month, holiday stress maybe?

Anyways, I was hoping to seek some opinions from you all, seeing that I trust this community & always appreciate the input.

My period is about 28 days late now. I've taken 6 tests in the morning days apart which where negative. Having slight cramps and lower back pain. That's about it. Can't say I'm that stressed?

Only had sex once maybe twice for this late cycle. I'm always careful & protected.

Going in for blood work this week, so I can rule some stuff out but has anyone had a similar experience and ended up with another negative?

Thanks guys