Late period; Neg. tests

I posted this other places 3 days ago but never received any advice....

So my period is 9 days late. I’ve taken multiple at home tests all but one was negative. I had a doctors appointment Monday and they did a test, it was negative. They want me to wait until it’s 2 weeks late to do any testing to see what’s going on. I’m super nervous.

I know I didn’t ovulate late but I have had moderate cramping since the day of my appointment... (not as bad as period cramping) Has this ever happened to anyone else? If so What was your outcome?