Pregnant w/ #2 and don't know what to do or where to go

Hi... i am 20 years old. i had my son Sep 2009 and just found out this morning that i am pregnant again. It is by the same man but we

have been broken up for over a year. I am supposed to be going to The Navy in June and my mom is watching my son. I can't leave my

mom with a newborn and a (almost)2yr old :( I can't tell her that i am pregnant, I'm un employed, and I have no where to go. So far the

navy is looking like it's not going to happen. the father of the child doesn't want me to keep it. I don't believe in abortions. I seriously

don't know what to do or where to go bc i can't stay in my mother's house. I can't tell her that i am pregnant. What should i do???