Hi! I’m so sorry that you are feeling this way but I will give the best advice I can think of. Since you are having second thoughts, talk to him about it. If you feel like you cannot talk to him about that, then maybe it isn’t meant to happen right now. Are you close with any family or friends that you could talk to to help you decide? If you really want to get married and feel like it is the best move, go for it. But since you are so young, if you are having any thoughts of not going through with it, I think it is best to call it off or at least get the things straight that are making you uncertain. It’s your life, not mine obviously but I thought I should give any advice I have! The best of luck to you!!