Anyone ever dealt with extreme paranoia and anxiety over possibly being pregnant?

My test yesterday came back negative, I have no symptoms. It’s been 2 and a half weeks.

Maybe it’s my birth control that’s making me feel like this?

I just started back up again on September 30 after taking a break for a few months.

I just can’t shake it from my head. Partner says I have absolutely nothing to worry about and I stress myself for no reason.

I’m worried that my anxiety is delaying my period which makes me even more stressed everyday that I don’t have it. It’s like a never ending cycle. Glow says I have 9 more days left.

I just want to be calm and know that I’m fine.