Pregnancy

So I had sex a few times during ovulation this month and he came inside me two of the times, periods not late quite yet but I'm worried about the odds of being pregnant and I can't tell if I'm have premenstral symptoms or what but I just feel off. Especially my stomach it's all sorts of messed up and then I'm majorly bloated. I thought my period was gonna be early cuz I had saw a lil bit off bloody when I wiped after peeing but it went away fast and I was wondering when is the earliest you can take a test I had sex last 8 days ago and I'm supposed to get my period in 7