At the age of 18, a senior in high school and captain of the cheerleading team I feel like I have pretty much everything I could ask for. I've always been pretty careful about using contraceptives when having sex, but I know that they aren't 100% effective. About a month ago I messed around with one of my good friends, it was one of those "in the moment" type things that you never speak of to anyone else. It seemed fine until about 2 weeks ago when I started looking at my calendar to check when I was supposed to have my period. It hasn't come yet….It has never been this long in between cycles and it starts to worry me. I took a pregnancy test over the weekend and it clearly came out negative, but I know that there are false negatives all the time. I'm more afraid of telling my parents than I am of actually being pregnant, because I've grown up in a Christian home where sex before marriage is frowned upon, and having to tell them this would totally devastate them. I know that they would be so disappointed in me. And besides that, the guy who it was with isn't even my boyfriend, which makes things even worse. I'm just very lost right now and need some help……