Is it just my hormones or would you be bothered too?

Imma start by saying that my SO works 2 weeks on (away from home), and 1 week off. I don’t see him for 2 weeks so I look forward to his week off. However, his brothers have came to stay with us every week off of his for the past 5 months and stay the whole week. I’m not against them coming over because I want him to spend time with them, but I need my time with him also. I wouldn’t mind a weekend, but I feel a week is way to long and we won’t have alone time after the baby. Not only that, but it’s so expensive to feed them because it really adds up with how long they stay. I’m also 34 weeks pregnant and I can’t even work on the nursery because that’s the room they stay in and every time they leave I have to throw away trash and pick it up. I feel like I don’t even see my SO and he’s supposed to be on his week off. They run around town the whole time and stayed out until 4 or 5 am one night and I don’t get invited anywhere they go or anything so I just sit at home doing nothing since I can’t work on the nursery. What bothered me just a few mins ago was that he came in the room and said he was going to Pizza Hut to eat with them and didn’t even invite me or anything. He does this all the time when they’re here. He’ll take them out to eat (at expensive restaurants even) and will leave me at home to find something else to eat. We really don’t have the money to be paying for their meals as we’re 19 and expecting a baby next month. His brothers are 18 and 16 so they eat a lot and our pantry is empty by the time they leave. So because it’s expensive to feed them all I get left out and I’m pregnant! Idk if it’s just my hormones and I’m hungry or what, but this just really bothers me. Also, my SO is in the oilfield and it’s starting to slow down so we’re worried about him getting laid off which the company has already gotten rid of the waterline completely. We need to be saving as much as possible right now with our baby coming soon. I think I’m just stressing. Any advice would be helpful.