Hi alfacentaury, i married at 20 :) It`s not
frightful :) I year ago was borned my son - Max
Now i am 23 yo, have a beautiful wife, and son!
When 3 years ago i said to my girlfriend "be my wife", i was scared! But very soon i understood, that i was right. I never regret about my decision.
Now most of my friends envy me
Finally - i think, if you love your partner, you must marry, but not make a childs at least one year after. You need time to be sure, that you really can live with your partner.
by the way - are you male, or female? :P
Be happy :)