Really scared of being pregnant

I really dont want another baby right now. I just have this feeling that I'm pregnant. I'm only 1 day late for my period so I still have my hopes that I'm just late. However, my uterus feels heavy and I have very mild cramps. I feel different and it makes me scared to take a test (I'm waiting until Monday). I never thought I would think about getting an abortion but at this point (if I am pregnant) idk I might do it. I would feel super guilty though. I don't know what to do.