My god! Do not under any circumstances take a month's supply of the birth control pill. How long has it been since you both had sex? If it has been 72 hours or less then go to a doctor or planned parenthood near you to get the morning after pill.
Shone: I would under no circumstances give you advice to induce a miscarriage. I am not a fan of abortion but it is much safer then inducing a miscarriage. You could have internal hemmoraging, infections etc.
You should find out for sure if you are pregnant. Sometimes the stress of it all can delay your period. Pregnancy tests from the drugstore are from 7-13$ usually so borrow some money off of someone. You will eventually have to tell your mom and I would suggest if possible to just sit her down and explain your situation. She will be disappointed but she will forgive you. You can then (if you are pregnant) discuss the options of adoption or abortion (whatever suits your circumstances)
hope it all goes well honey
~darling