I currently take Loestrin 24 Fe and have for 2 years. This past Saturday (October 12) I was fooling around with my boyfriend. We just had oral and manual sex. I am concerned though because there was some clothed grinding and I think at one point, he pushed my underwear aside and the tip of his penis may have touched my vulva for literally a couple of seconds. Normally, I wouldn't worry, but I've been feeling nauseous and bloated since. Is there a chance I'm pregnant from the pre-ejaculate? Or is this something else ( I am also on Effexor currently)?