OK this is the situation: I am 18, me and my b/f have been together 2 1/2 years, we always always always use a condom, this month had 1 exception, we were fooling around and i was like 'Try it without one' (just b/c ive never even seen what it felt like, so he did it for maybe 30 seconds max, and then he was like, 'no im too scared of what will happen' so we just stopped, you know..? My period has a tendency to get about 2 or 3 days later every month, last month was period was June 29-July 4, and its now, Aug 3 and i havent started....Do yall think im ok? We did the whole 'experiment' on like the 24th or 25th of July.. so a few days before the end of the 28 day cycle, PLEASE help!