Hi my girlfriend and I had sex just over 8 weeks ago. I used a condom but it slid off and went up her and I did ejaculate inside her. She's taken 4 home pregnancy tests recently and they've all come back negative. She has bled a couple of times after we had sex as well. I was just hoping it was unlikely that she might be pregnant as now would not be a good time. What do you think? Thanks

When unprotected sex has taken place, pregnancy is always a high possibility.
When you say bleeding a couple of times since then, do you mean in the last two months she has had her period ? Or spotting?

If she has not had her period in the last 8 weeks and has had spotting, that is a sign of pregnancy.
Even thought tests at 8 weeks have come back negative does not mean she is not pregnant.
Depending on how strong the HCG levels are in the body (pregnancy hormone) tests don't always detect it even at 8 weeks. If she is in fact spotting and has not had a period since those past 8 weeks, I would suggest going into see your family doctor and have a blood test done, as they are the most accurate. Or going in to see your family doctor anyway to make sure all is well. Good Luck :)