So last Sunday I took my pill at 5:00 pm but I threw up at 5:40 so I don't know if my pill digested yet or not but the next day on Monday I had sex with my boyfriend we used a VCF and he pulled out we haven't had anymore sex since then and I've been taking my pill everyday on time yesterday I thought about it and went and bought a pregnacy test it was negative also today I just started my 4th week of the pill (the fake ones) so at the time I was on day 13 or my 13th pill. What are my chances of not being pregnant am I ok.