vaginapagina | possible pregnancy? unsure (Reply)

I'm always paranoid about being pregnant. But this time I have a reason. I was using Yaz. I ran out for one month, but I couldn't take not having sex so I did anyways. He never came inside me or anything, and it was RIGHT after my period. Later, I had a doctor's pregnancy test and it came out negative, so part of us thought we could get away with it. We had unprotected sex two more times. Then we bought condoms. The second time with a condom, it came off halfway through and we didnt notice for like three minutes.
Well, I looked it up, and i was ovulating then. He didn't come but ... i dont know what could have happened. He usually has a very fair amount of pre-ejaculate.
I normally get this white discharge around that time of the month that I think is just ovulation goo. I dont really know.
Well the day after that happened, it stopped.
I haven't had any discharge or anything yet.
We just broke up and stuff. I'm three days late for my period. Is it just stress? Is there a strong chance?

Thank you! You girls are always awesome with help.