I'm 20, and 5 weeks pregnant.?

It happened when I started dating my ex boyfriend again. I was on birth control at the time, and about a week ago I started having the symptoms of early pregnancy. So I took 2 pregnancy tests, and they both were faintly positive (the second pink line was very light on both tests). Before I found out I was pregnant, my ex and I broke up because of his jealousy issues. I still do love him, and I do want things to work out, but he seems kinda weird about finding out I was pregnant. He was quiet, unsure about what to do, because he has a 3 year old with his ex girlfriend and there is a lot of drama ociated with his son and her. He had to sign over custody rights to her. I wouldn't do that, I actually want to keep my baby, and I want my baby to have both parents. So I'm concerned about him deciding he doesn't want any part of our child's life. He is 23, and has a good job. So he wouldn't have any problem supporting us. I don't go to school, and I don't work, I was in the DEP program for the Army before I found out I was pregnant. Now, the military decision that was going to set me up for life is out of the equation, my parents do not know I am pregnant yet, and I already need to start going to the doctor for my monthly check ups. This baby is going to change my life, but I believe things happen for a reason. I will never abort a child, and I will only give up a child for adoption if I absolutely can not support my child. Which I know I can love my child unconditionally. I have very conservative parents, and their 20 year old, un-wed daughter is pregnant with a baby from a person they despise (my ex). Yet the only thing I really am concerned about is the welfare of my baby, and the happiness I want my child to have after birth. Being that I am very early in my pregnancy, I am also concerned about the fact that I might be a single mom. Either way, is keeping my baby the right thing to do? Even though I might not be able to provide my baby with both parents?