i'm in the same situation i'm 22 and my fh JUST turned 20 two months ago. we were 21 and 19 when we got engaged. if you think that you are ready, then that's all that matters, but if you are at all unsure that this is the person that you want to spend the rest of your life with (which i doubt... you said yes when he asked you) then wait awhile and see. but if you're anything like me, then you know beyond a shadow of a doubt that this is your "the one" then go for it!!!!!