Nothing. Your both underage so it isn't illegal and you won't be charged for statutory rape. However if you decide to keep the baby and the government doesn't think your doing an adequate job of taking care of the child, the children's aid society might step in. Good luck to you both.
Legally you're fine. Underage pregnancy is not illegal. But you do have to make serious decisions regarding your future and the babies. I'm sure you will careful discuss all your options with both your parents and see a doctor so they can confirm you are indeed pregnant and immediately get the proper vitamins(prenatal). I wsh you both the best. Having the support of family & a doctor will help you through whatever you need to do.