Pregnancy Info HOME

Hell I'm 22 years old and so is my girlfriend. We have a house together and I make decent money. She has a 2 year old with a previous boyfriend. We have been living together for 7 months and we found out she is about 2 months pregnant. We had been trying for a baby for awhile. I'm so ready to be a father and she says she is really happy too but nervous wich I understand. Well she says she loves me and at night she cuddles next to me and acts like she is really happy with me. But during the day she doesn't act like that so much. Well this Morning we woke up and she wasn't talking to me much and acting really weird. So I asked her was she sure she wanted to be with me? And she said "I don't know" so I told her we can make it work whatever is wrong and she said "i have already tried to make it work" I love this girl very much and would do anything to make her happy and the thought of loosing her while she pregnant hurts a lot. I don't know what I did wrong so my question is.. Is it her pregnancy hormones making her think this way? Please some kind of help or guidance would be greatly appreciated. Thank you