it might help you if you always think about all the good things about ur relationship. dont concentrate so much on the fact there is a large distance between you. try to use this time to get to know each other better emotionally. i'm doing that with my boyfriend. we kept fighting because we were focusing so much on the fact that we are far apart and unable to see each other, rather than thinking about the fact that its only temporary.
dont look at the negative. look think about things like names for your baby. also, i recommend you discuss rules you want to implement. are you going to pay more attention to buying ur child toys and placing them in front of the tv, or do u want to spend more time talking and playing with him/her than sitting them in front of the tv. you were both probably raised rather differently and you need to discuss rules early on. when the child is older, are they going to have to do chores or not? will you always buy everything for them or will they have to raise the money to buy a lot of things on their own. there's lots to think about, and as u will both be raising this child, you need to think about these things.