Okay so I am 18 and my boyfriend and I have been having sex since summer of 2010. We are always very careful whenever we have sex. I am on the birth control pill, and we always use condoms. Since I am on the pill, my period is very regular. I was ovulating on December 17th, and my boyfriend and I were messing around, and his tip was touching my vagina, but it did not go in. he put on a condom, and we obviously had sex. I know that you are most likely to get pregnant the day you ovulate, so from that day on, I've been worrying. The day before I was supposed to get my period, I noticed a drop of brown in my underwear. Nothing else happened that day (sunday). The next day, the day I usually get my period, I kept getting that brown discharge. Later in the day, I began what I think was my period, but it was much, much lighter than usual - and a mixture between brown and red. Usually, my period is a decent amount, but this time, I could hardly fill up a whole tampon. Prior to getting my period, I was extremely stressed from worrying about possibly being pregnant.. so I think my light period might have something to do with that? I'm not sure though.. that's just what I'm hoping. Anyway, my period ended when it usually should, but like I said before, it was still extremely light. A few days after my period ended (this past week), I noticed that my breasts are very tender and that my lower back is sore. Just for peace of mind, I decided to take a HPT last night, and it came back negative. I took another HPT this morning with my first urination of the day, and again, it came back negative. I'm really hoping I'm not pregnant, and all of this worrying is making me sick. I'm not sure if I'm making myself paranoid, or if what I'm feeling is real. My boyfriend and I decided to not have sex anymore (or for a while) because we realized that if something did happen (such as pregnancy), then we would not be emotionally ready for it. Please... any input?

Its possible... we have a number of prominent members here who still got prenant while properly using condoms, the Pill, AND contraceptive cream all at the same time. Odd are you aren't... but if you have sex, the odds are NEVER zero.

Stress can cause a disruption of your monthly cycle... so its still early to be certain.

You are freaking yourself out. I know from personal experiences that you can easily mentally create your own symptoms in these cases. Light periods, swollen breasts, and body aches are all things your mind can do to play tricks on you when you are stressed or nervous about getting pregnant. I've convinced myself I was pregnant many times. Best thing to do is just relax and give it time. Wait a week and take a HPT again first thing in the morning. I'm sure you are probably not pregnant. Just be more careful next time, so you woun't have to go through the mental anguish again.