getting anxious

I'm leaving tomorrow out of state and I'm just getting anxious about it. I'm 21 weeks pregnant so I know it's okay to fly but it still makes me a little nervous. I also get really homesick. Especially because I have 3 dogs that are like my kids and I'm hardly ever away from them like I miss them when I'm at work haha. Also my boyfriend has I haven't been getting along at all the past week like we've been arguing pretty bad. So having this time apart I feel like we need it but it also just makes me nervous. Like what is he going to do when I'm gone, is he going to like me being gone.. I just need someway to clam my nerves because I really want to have fun on this trip. But it's like I don't even want to go. And I'm only going to be gone for about 4 days.