I'm 18 and my girlfriend and I have been dating for over 3 years now, and am glad to say we are both still virgins.
However, more recently, we have been doing more fooling around and experimentation between oral sex and variations of dry humping.
For example, we have taken off our pants (not our underpants) and did some dry humping like that, but we've never done that long enough for me to cum. I don't think it would be possible like that.
However, we did do one thing where I took my penis out (she had her underpants off) and held it down while she just rubbed her vagina on the outside of my shaft , but I'm un-circumsized and I held the head of my penis + and inch or so so that the head would not come into contact with the vagina. I'm pretty sure that none of my pre-cum could have gotten near her vagina. I did not come while she did this and it was for only about 30 seconds.
Maybe I'm just paranoid because its almost been a month since her last period (she also has an irregular menstrual cycle), and at one point last week she was throwing up alot for a day, and today she had a fever and a cough. I don't know if theres anything to that or if I'm simply paranoid and she just ate some bad food and caught a fever last night.
i think you're safe man. reading the circumstances you'd have to be one unlucky guy for a bun to make it in that oven. as for all the symptoms, the vomiting could be any number of things other than pregnancy and the off-balance cycle explains that. just THINKING the possibility of pregnancy is enough to throw of a girls anatomical balance.