What is wrong with me 😐

Okay so me and my man have unprotected sex and he cums in my all the time. I've had 2 pregnancy scares with him. One time I said jokingly "I can't have kids, not fertile." But honestly I'm starting to think that. So anyways, I'm 6 days late and I've been getting headaches and nausea for 2 days in a row. My boobs have been increasingly sensitive and I've been getting a strong craving for pizza. No frequent urination tho. So I go get a test and still NOT pregnant. It's not that I'm trying either but damn some people get pregnant within a blink of an eye. I'm scared for my future with us. Like what if down the road I struggle with getting pregnant? Then imma be crushing his dream and my dream. 😔