Partner going out

I'm 9, nearly 10 weeks pregnant and I have a 1 year old who's teething and is up a lot at night at the moment. I'm suffering from hyperemesis, I'm on 2 anti sickness tablets a day but I'm still being sick and very tired. My partner is due to go out tomorrow. I've said to him I may need him to stay home as I'm still struggling badly. I also suffer from rheumatoid arthritis so I'm in a lot of pain with that as well as the other things above. My partner keeps saying to me that the lads he's going with are really excited for him to go out. That he hasn't been out in a long time. Which he hasn't but I haven't been out in over a year. Anyway he's really making me feel bad for wanting him to stay home. If he does go out which he most likely will he'll be leaving ours at 5pm and probably won't be back until early hours Saturday. I don't mind him going out but I'm really struggling with the pregnancy and my 1 year old. I've been going to bed every night between 8 and 9pm and he's been settling my little girl as I'm knackered, in pain and I'll be sick if I stay up later. I'm just asking what are your opinions and what would you do in my shoes? I really want him to stay home. Also his birthday is beginning of November and he'll either be going 3 hours away for a whole weekend away or out for a night in London. I'll be on my own the whole time with my little girl. I normally don't mind him going out but I'm struggling that much I've been considering abortion as I've been doing this all myself.