Having a kid is like having another job, for both of you. At least for the first 3 years, then it gets easier pretty fast.
I agree with remar if you're interested in becoming a parent but aren't comfortable at this time, parenting classes would be best. Also after you take the classes they may be able to refer you to a child care center like a YMCA where you can volunteer to get some exposure to dealing with children while someone else is present.
Best of Luck
~S.A.
Your mother was so right about babies. Taking care of one is the hardest job you will ever have. You do not seem ready to have a baby. Why don't you wait until your married? Children need a stable environment. Just because you feel like you want a baby now does not mean your ready for one. We're talking about a human being that needs love, attention, clothes, diapers, food, health care, and the list goes on. Once you get married if you feel like your ready to start a family then you can get books and even take some parenting classes.