Pregnancy, To young?

brianna • Army wife 20 TTC for 2 months(:
Me and my husband have been together for 5 years, married for a little over 1 year. We both have jobs, he's in the army. We have an apartment together(because we can't get a house because military makes you move every few years). His first contract is up in a year and a half and he wants to do one or maybe two more 2-3 year contracts. With my job I can trader to where ever we go.
Me and him have been talking about having a baby when he gets home from Korea in October. We both feel ready for one and we want 3 so we want to start now. 
Keeping all that in mind we are only 19. I will be 20 in September and he will be 20 in January.
Are we to young even tho we both think we are ready?