<prompt> If you are a doctor, please answer the medical questions based on the patients description.Hello, I am 16 years old. I have that contraceptive implanon for about a year and a half now, but I have known people to get pregnant on it. My boyfriend and I had unprotected sex early 4 or 5 am on the morning of April 29th. He did ejaculate in me because he didn t pull out in time. I have been very tired, moody one minute i could be happy the next i could be on the verge of tears or pissed off, I have been urinating alot 4 times today between 5am and noon, but I have a loss of appetite . If I eat spicy food I get very nauseous and if I eat a normal portion of food for example half a order of carne asada, just the steak i feel so full like im going to throw up. No bleeding , just very light spotting, with no odor. And my boobs are getting bigger, and my nipples are more erect. Could I possibly be pregnant?? Even with this birth control??  <response>: Hello, You are on Implant for 1 and half yr. It is sub dermal contraceptive implant and gives protection more than 99.5. Your features probably due to hormonal imbalance and psychological upset or stress. It is more resembles with Pre Menstrual Syn Chat Doctor. If you missed your period, then do a home pregnancy test after 1 wk to exclude confusion. So take healthy diet, avoid stress by doing regular deep breathing, do regular exercise, avoid teacoffee saltyspicy food in 2nd half of cycle, 