Baby fever?

I'm 21 still attending college, I've been engaged for 3 years, but every time i think of having children i get so excited. I know I'm young and my mother hates my fiance but is it wrong of me to want to have a baby? I don't know I'm just dying to get past this point of my life, everything feels stagnant and i have always wanted children. Maybe its cause I'm afraid i wont be able to have children one day. Or that when i finally am ready itll all be taken away from me. I know my family would say no your definitely not ready, you dont need a child right now... Thank you for reading or leaving comments.