Unexpectedly Pregnancy

So I'm pregnant and it's a bit unexpected. My boyfriend and I have decided we want to have the baby, but I'm not entirely sure how to tell my family as I'm sure they'll be upset. Not because they don't like my boyfriend or anything, just because I'm 22 and I'm sure they'll think it's too soon for me to have a baby. I'm very excited and terrified at the same time, but more excited than anything. I'm just not sure how to drop the bomb knowing I'll get mixed reactions or possibly all bad ones. Suggestions please???