Not ready yet...

I'm 16 and a junior in high school and my boyfriend is 18 but got his GED when he was a junior. For me, I have big plans for me in the future. Moving to Oahu from Hilo. Going to college. But my boyfriend and his family really wants a baby. I told him my plans and that I'm too young to be having a baby. Also my plans for the future doesn't have time for a new born baby. I'm already having a hard time in school with the ACT, SATs, compass tests trying to finish my 60 hour community service and just keeping up with my grades. I barley have time for him idk what's makes him think I have time to take care of a child. I know people have had child younger then me and they can handle. But I just want to be physically ,mentally, and financially ready. What should I do.