19 years old & wanting to expect

Terrane
I'm 19 years old I'll be 20 next year early June. My fiancé is 23 years old he will be 24 this year late December. We're both in college and working full time . We have our own apartment and our own vehicles. We pay our bills together and support each other together. We've been together for 3 great years it will be 4 next year August. I got pregnant at 15 and my mother made me get an abortion at 5 months, she knew the doctor and paid him 2,000 to abort my child November 2011, shortly after that the doctor was sent to jail due to other disturbing reason there was also 1 death included gladly it wasn't me. To this day ever year in November I go into a deeply depressing mood. Now that I'm older and wiser I've came to the conclusion where I want to have a child of our own. My fiancé is about to be 24 and he's ready , are we to young ? Should we wait?