So I hooked up with a girl one night and pretty sure I didn't get off. It was close but still. Precum worries me. Now the next three days after that she tells me she's pregnant but says "I know its not urs". After freaking out I looked it up and found that its too early to tell so I agreed that she was right. She said the reason it was not me was because the 2 days she was ovulating (2.5 weeks ago) she had sex with her Ex while they were dating and he came in her both days. She took a pee stick test and it turned positive. Still I know better that there's no way its mine because again, too early. However this is my concern. This whole thing starting Sunday and today being Friday. Us having had sex sunday. She texted me today saying "let's go to the bar" and I'm like "aren't u pregnant?". She says "well I don't think so anymore because I found out he's on anabolic steroids"? Her period is on Monday she tells me she'll know by then for sure. I said "well if it turns out for some reason its mine, lemme know because I am not gonna be a runaway father type of guy". Now I wanna know what you the people think I should do having gotten all the facts. I'd appreciate any advice as to what to know and advise her against drinking so on and so forth. What should I do?