Long distance

So me and my boyfriend are long distance at the moment because he is at job Corps and in Georgia while I’m in Florida. I’m pregnant and we haven’t been away from each other like this before. I’m having a little bit of a difficult time dealing sometimes without being able to be with him physically (like hug him when I need too). Even though we are not able to talk in person we have generally been communicating well but We are both kind of missing sex and kissing and just everything physical. Since we’ve been together we have had sex a lot and suddenly there’s nothing. We try nudes and stuff and he likes it but I just am not into it it feels like something middle schoolers do to me. Sometimes it’s awkward and just feels so weird since we have never done anything like that. I really want to keep our relationship “spicy” but I’m not sure how. I’d like to do something special for Valentine’s Day specifically but idk what. We can’t really do video sex cause he’s in a dorm and around people. Help please!