Am I crazy?

So my last period was only 2 days and it’s always been 3 days. For a few weeks after I had mild cramping as if af was coming. Since then I have had back aches, migraines almost every day, dizziness, bloated feeling, nausea every day in the evening around the same time, and my favorite perfume is no longer an option for me as it stinks so bad it makes me sick, my stomach has been itchy, my sex drive that is normally very high has pretty much gone away, and I’m always exhausted and heartburn all the time. Now I tested about 10 days ago and got a bfn. I feel like I may have gone totally mental and convinced my body that I am indeed pregnant. I don’t want to test right now as the disappointment is crushing. Plus I don’t want to face the fact that if I’m not pregnant then I must be crazy.