I have no reason really to think I might be pregnant right?

It’s been two months, I’ve had two periods there like heavy, and Ive had negative tests. ive had a lot of nausea and in the morning too and throughout the day, I often feel faint sometimes. And wake up with a lot of pressure in my lower belly. Even sitting here it feels different and walking. My belly’s hard when I push on it I hope I’m just anxious and making this up.