Thanks everyone. I am glad I am not the only one who is scared, and for a moment I did think I was over exaggerating which I now realise I am not.
I think we will just see what happens when I deliver, and right up to before he goes.
If I cope fine, with his support, then I will just grind through the 4 days alone. If I struggle, even with him around, I will ask him to stay. We will lose money on the flights etc. but I'd rather that than struggle on my own.
My mum can be around for 1 of the 4 days now, which is in the middle of the trip away so at least I can have a break and catch up on some sleep. Otherwise I have some friends that can come over in the evenings although they are not mums themselves but I'm sure they will be happy to make me some dinner or something LOL.
I'm sure I'll be fine, I was talking to someone at the weekend who said I'll probably enjoy the alone time with her. I'm deffo staying in my PJs haha!
I am just going to have in my head that he is definitely going and I will be very brave. Thanks again everyone.