Am I crazy?

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I am really scared because I'm 3m pp and I'm 3 days late on my period. I've been cramping and getting headaches. My husband is literally asking and looking up on Google if my period is about to come if it could cause a false positive and he read that protien in urine could cause a false positive and he told me i had been eating quite a few burgers lately that that was probably it lol. But fr am I pregnant? And will it be okay where I'm 3m pp??