It's good to hear that you got your period to put your mind mroe at ease about your situation. I don't intend to scare you or anything, sarahmarie, but you could be pregnant and still be getting your period - it can and does happen sometimes.
I hate to vent about my views on abortion, but I will just a little for the sake of the topic. I'm wholly pro-choice - I believe it is up to the mother to decide whether or not she wants to have a child. If you decide that it just is not the right time in your life to have a child, or you feel that you couldn't give it the proper care both during pregnancy and after birth, then abortion could be the only choice. And what I mean by the proper care during pregnancy is such things like if you drink, smoke, or do drugs, and you know you couldn't stop even if you knew you had a baby growing inside you. I'm not saying you do any of this, but i'm just stating an example.
Trust me, hon...I know how it can be when you're caught up in the heat of the moment - you'll forget to use protection, or you'll figure that one time without it won't hurt. I can only advise you that, when you think you want to start having sex again, that you try to get on some kind of birth control as well as utilizing a condom. It's not 100% effective, but it'll protect you pretty well, and you'll at least have a back-up method of contraception in the event you forget the condom again.
It's good, though, that you spoke to your boyfriend about all of this - he probably would have been upset with you if you went and had an abortion without telling him. It's good to know that he would be willing to support you no matter what, and also that he is willing to hold off on sex for a while so you guys can avoid another big scare like this. He sounds like a good guy.