Ok. So, I'm 19 and have been sexually active for 2 years. I have always had irregular periods since I started but my doctor says that it is normal. I had unprotected sex with my boyfriend but he pulled out and about three seconds later, he ejaculated. I saw it start and stop. After, he took a shower, I used the restroom and we didn't touch down there the rest of the night or next day. Even though I am irregular, I estimated my period to start about two weeks ago however, i wasn't very concerned because I've been known to go up to 70 days between periods, again my doctor says its fine. My cycles normally last about five days with a normal to heavy flow. Three days ago i got brown discharge that I assumed meant the start of my period. But the brown discharge has been continous and I've only had a spot of blood. No cramps or anything. I have started a new diet where I only drink water and i am an intense caffiene drinker, could this be affecting my period and making me have brown spots rather than blood?? OR How likely is it that i am pregnant???? I haven't taken a pregnancy test yet, but I plan to. I just want to know your opinon before i do take the test. I need advice immediately!!

You had a pregnancy risk if you had unprotected intercourse, whether ejaculation occurred or not. This is because pre-ejaculate can contain trace amounts of sperm from a previous ejaculation -- and that's assuming a guy can even pull out perfectly in time, which is rare for young men. You'll want to take a pregnancy test 14 days after this occurrence to be sure, and talk to your boyfriend and physician (possibly a different one, I'm getting to that..) about finding a form of birth control you can use consistently. Irregular cycles do not mean your chance of pregnancy is less.

Was this doctor you saw a gynecologist? If not, I'd highly advise you to seek a referral. If so, seek another gynecologist. If your irregular periods are bothersome to you, no doctor should tell you it's normal or slap you on a cover-up treatment like birth control pills (which, while not something you mentioned, I feel compelled to say anyone, since that's too often a menstrual cure-all-that-doesn't with some doctors). While the clinical definition of amenorrhea is 90 days or more between periods, you're pretty far on that side of the spectrum, and by age 19 have likely been having periods for long enough for them to begin to come more regularly, sparing any health problems (I'm getting to that in one moment..). You might consider seeking a second opinion.

If you're doing things like dieting with only water and have high caffeine intake, that's the first place to look as far as irregular cycles go. Women ovulate when our bodies are healthy and in prime fertile condition, not when our bodies are unnourished and/or starving. This is why women suffering from anorexia nervosa often stop having periods altogether.

For your health, please see a doctor immediately to address your weight concerns and discuss ways to either lose weight safely, or get help for any body image issues. It is NOT healthy to crash diet or deny yourself food, and you are seriously harming yourself every day you do so. THIS is the issue you need to worry about and see a doctor about TODAY. Pregnancy is not nearly as serious as taxing your immune system, permanently slowing your metabolism, and feeding a cycle of body negativity that only cuts deeper with every "victory".

Please check out these additional articles/resources:

Sexual Health 101: Hers

Seven Ways to Love Your Body

Life Lessons from the Third Stall on the Left