What’s going on?

Asia

I am currently 17 days late, which isn’t un normal completely but still concerning. I took two test on 8/7 both saying not pregnant. I have some cramping in the morning and I feel like my period is coming but nothing.

Nothing has changed that I can think of (no diet change/ no exercise change) stress, maybe? But not enough that I could remember.

Has this happened to anyone else before?