First of all, I think you should definitely sit down with your bf and tell him how you honestly feel. You should be able to talk to your significant other about anything and everything. Having a baby is a big deal and not something to take lightly. You need to make sure this is what you both want and are ready for. Remember to do what your gut tells you, if he isnt accepting of your decision of not having a baby so soon then in my opinion I think you really need to reconsider this relationship. Best of luck to you.