You could be but I have only seen this once or twice in my career. It isn't really common but you don't have to have penatration to get pregnant. The sperm only has to enter the vagina. If you aren't, be really careful to keep sperm away from your vagina unless you are on birth control. You may just be late. At your age hormones and stress can really do a lot with making your periods early and late. I wish you the best.
It's possible, but not very likely. It would be more likely that stress is what is causing you to be late. Though you should read up on sex and educate yourself on how it all works and ways to protect yourself against pregnancy and STDs. You seem awfully close to having sex, so look into birth control methods. And just as a fyi, the "pull out" method is not a form of birth control. Try to relax and wait for your period to come. If you want to, you can buy a home pregnancy test to use, just to put your mind at ease. If you don't feel ready to have sex, please don't do it. No guy is worth it for that, as you do not want to have regrets later on.
its unlikely, he would have had to have ejeculated inside of you for you to become pregnant. Please bare in mind though that youre only 14, which is pretty young to be having sex but if so please use protection...14 is way too young to be getting preggers or contracting a STD :)