Okay, me and my boyfriend have been having sex ( not regularly ) using the withdrawal method. I just read an article stating that pre-cum contains no semen ( or immobile semen) so it is highly unlikely to get pregnant this way. I am not a follower of my period - but i know i come on, usually, around the first few days of the month. it is now the eighth and i have no signs of coming on soon. I am really worried, and stressing loads. I have alot of exams coming up soon and am wondering whether this could be the reason for my late period (although i am not aware i am under any extreme stress) i have been expriancing nausa, dizziness and sharp pains in the left side of my lower torso. i was thinking this could be down to my recent change of diet ( i am on the special K two week challenge- eating cerel for breakfast and tea) I have an amazing boyfriend - but we are SO not ready for me to be pregnant! the more i think about it the more I stress, and it's getting in the way of my studies now! Any one offer any advice? i really need to talk to someone, but don't want to worry my boyfriend about something that may turn out to be nothing.