My girlfriend and I ended up having sex during her period. It was unprotected. After that she got real scared/nervous about getting pregnant (This was 20ish hours after her period started). Her period lasted only 4 days compared to her usual 6-7ish. We had sex multiple times during her period and on the 4th day it was almost not there, we had sex again, when she went to take a shower afterwards she said she had some pinkish fluid rush out of her which made her get really dizzy/nauseous to the point where she couldn't stand up to well. About 15 minutes after that she seemed fine, she felt fine, but now she has soar breasts, frequent peeing, cramping, fatigue, and she actually ate food today without me forcing her to eat (she hardly eats). She's 16 and does have irregular periods. And this months period started 5-6 days later than her last one (due to stress). It's been about 7 days now since her period STARTED, 3 when it stopped and that pink fluid rushed out of her. I know that she's very scared of being pregnant, and the more scared she gets the worse her symptoms seem to get and i know that sometimes your body can play tricks on you if you are like that. Any advice would be greatly appreciated. Thanks in advance.