Well, I'm Lindsay and I'm 17. I dated this guy when I was 15 and started having sex with him. We didn't talk for awhile but he's now 19 and we've been sleeping together again since December. I've been on the birth control patch since about December and everything has been fine. In the middle of janurary, I accidentally left one patch on a day too long, and then once i took it off, i forgot to put it back on until 2 days later. (my patch is put on on a certain day, kept on for a week, then changed the same time the next week for 3 weeks, and then the 4th week, when you're supposed to start your period, you leave the patch off for a week) I didn't think much about it, but I had sex the week later (we never use condoms). Everything has been fine up until this week. I was supposed to start my period Monday, and it is now Thursday. I have EXTREME cramping, which is very odd because I've never cramped from my period once ever since I started when I was 11. I've been very tired for the past week and I've actually had less stress on me this week. I was throwing up all yesterday morning before school. I get random waves of nausea. I was going to stay home Wednesday and today because I felt so horrible, but I changed my mind the last second and I've regretted going to school both of those day. This morning, when I checked, I had a very, very small faint blood mark on my tampon. I've been having throbbing headaches and whenever I walk up the stairs at school or sit up too fast, I get dizzy. I'm hoping to get a pregnancy test this weekend, but I don't know if I'll be able to get to a store...

If I am pregnant, I would be about 4 weeks.

(and I read my birth control instructions yesterday, and its saying if you leave a patch off for a day when you are supposed to, there is a possiility that you could get pregnant....and it says that all in caps lock =/ )