What are the real chances of me being pregnant?

[Mia715]

My partner and I had sex a couple of nights ago (Monday) He pulled out twice but did not urinate in between orgasms. He also gets off very quickly the first time so I am wondering if that effects his ability to pull out completely in time. Anyways, I took an ovulation test yesterday (Tuesday) and it was positive. By Thursday it was negative so I'm sure I ovulated on Wednesday. Just curious the chances of pregnancy, or if anyone has found themselves in the same situation, and what their outcome was. I am 26 and he is 30 and we've been together for 6 years. We're not trying to conceive but we're also not "not" trying. The thought of maybe being pregnant has me excited though. Thanks girls!