1. I am not on any form of BC

2. Cycle is approx. 28 days

3. Last period was June 15th

Hey everyone! During what I am guessing was my ovulation timeframe I hooked up with a guy, we didn't have actual intercourse but we got close to it. We decided not to because neither of us had protection so we didn't proceed so we instead grinded on eachother (naked). I should be on my period about now and I was wondering what the chances were if his pre-ejaculate got on the outside of my vagina and me getting pregnant were?

I feel like I'm having pms symptoms for a few days now and I still have not gotten my period which is odd for me. Yesterday when I went to my psych appointment he seemed a little suspicious (without me mentioning anything) and ordered a pregnancy test along with my blood test, and put the reasoning behind it as depressive thoughts so apparently I'm more moody than usual. How early is it to start experiencing symptoms like this if I were pregnant?