Women can only get pregnany a few days a month when they are ovulating. Most women ovulate a couple weeks after their period. It is still possible to get pregnant at other times of the month because all women are different but I wouldn't worry too much about it. I used to do the same thing, we would use the pull out method and when it got closer to my period I always got nervous I was pregnant. One time I stressed out so much I actually missed my period and didn't get it for 3 months. I was getting all negative tests but I didn't get my period so I was sure the tests were wrong. After that we started using condoms EVERY time. I am 22 and I know I'm not ready for a kid so I do the responsible thing. I would think at your age it would be even more important.
The really only thing you can do right now is wait. In about 2-3 weeks, tell her to take a home pregnancy test. There is a possibility that she could be pregnant. The pull-out method is a bad thing. It's better just to have a condom and for her to be on birth control.
Well i remember when i was 16 and my boyfriend and I used that pull out method. We are now married and with a son I got pregnant at 19 am now 21. The pull out method was working for me till after 3 years I guess you can say I got lucky. Best advice I can give you is get the morning after pill asap like tomorrow morning you only have 72hours after having unprotected sex for the pill to take effect you dont need a prescription but you need to be 18yrs or older or go to the doctor to get it prescribed. Please wear protection its the best for you and your partner good luck hope this helps.
Pre-seminal fluid can lead to pregancy...if you don't want to get her pregnant then use a condom or she needs to use borth control.
She would not know that soon if she was pregnant. She would have to see a Dr to find out what is wrong with her.