OK, you've done all the right things, and it's extremely unlikely that you'll be infected with HIV.
But anxiety isn't a rational thing. And yes, it definitely sucks that the tests can't be done immediately (been there, done that, before PrEP was even available!). Sadly, that's just a limitation of the science.
If you are in the situation where the anxiety is having a serious negative impact on your ability to function, get some help with it! Whether that's getting reassurance in this community, from trusted friends, or by going to a professional. Not only will your life be better now, you'll be in a much better position to handle the next scare that comes along. Because life is full of scary shit.