I think I'm pregnant. I need advice:((((

So I think I might be pregnant. 
I've been kinda light headed, nauseous, and my stomach has just been feeling 'full' and heavy lately, but I also haven't been eating much. I'm on my 3rd pack of BC so idk if that's the reason why I'm feeling like this as well because I know it takes a while for your body to get used to it. 
Anyways, the guy I was hooking up with stopped talking to me and I'm taking a pregnancy test tomorrow. 
Should I text him to let him know? Or should I just wait? He has bad baby fever and has been asking for me to be his baby momma. But honestly I'm not going to keep it if I am. 
What should I do?