I want a baby

OKAY so me and my boyfriend have been dating for 7 months and recently I found out I have some minor health issues. Im 16 and he's 18 and going off to college . He thinks its best to have a child right when i get out of high school . But idk how long I will be in decent health . I want a baby really bad . And I feel like its now or never . But any advice on what we should do ?