What are my chances of being pregnant?

So I had sex with my SO about 2 weeks ago. We went a long one with no condom,  but when he needed to fully cum he put the condom on. He never came inside me. I'm just nervous of precum. My period isn't due until 2 days but I'm bloated, moody, and plain out scared just because I'm nervous to why I've recently gained 6 pounds as well and all I want to do is eat? PLEASE HELP! I need good advice to help me through this ?