My best advice to you would be to get a home pregnancy test and go from there. Check the boxes, as some can detect pgncy within 24 hours of conception and some it takes longer. As for telling your mom, wait until you know for sure instead of stressing over it now.
All the best....

I think getting off track of the birth control is going to throw your period way off. So just wait to see if it comes. Its way too early to be feeling all those symptoms so thats just probably in your head. Dont stress now because then it will be really late. I think the birth control would still have an effect seeing that you were on it a year before you got off. Just get back on the pill. If your period doesnt come in about a week, take a test. But dont think so much about it, because then your mind believes you are pregnant, then you think your pregnant and you get all worried when you just might not be. So good luck, wait a while then test.

If you were supposed to receive your period two days again, then you can buy a first response pregnancy test. They test as early as two days before you are supposed to get it. Believe me, if you are the test will come out positive as for your body produces a high level of a hormone that is in your urine when you do become pregnant. If the test is negative then you are probably not recieving your period because you overly stressing yourself. If you are pregnant, I suggest talking to an older person for advice before you talk to your mom. Such as a teacher, school counselor, or a friend's mom that you may be real close to. If you need a little extra advice i'm more than welcome to help! The best way to protect yourself next time is not having sex at all. Let this be a beg lesson to you.

To all that has responded to my question and has givin me fantastic advice, I just wanted to say thank you so much. And I will let other people know that there are good people on this site that have good intentions when they give advice. This is a fantastic site for teens to visit. I will take all of your advice. And once again thank you. :d