OWW, thanks so much for another lovely reply. Usually I can kind-of cope, but this evening I'm just sitting here crying my eyes out. I've made an appointment with my son's SENCO for advice, but that's not happening until after half-term.
I think part of the reason I'm feeling so down is that I was going to talk to Mr C tonight, but his plans changed and he's now gone out. Obviously I wouldn't expect him to stay at home so he could talk to me and not see his friends - that would be ridiculous. But I really think it would've helped to talk to him tonight. It's hard enough not being able to see each other often because of the DC situation, but when there's no time to talk either it makes things even harder.
I think I react in a similar way to you (getting a downer on him when other stuff is going wrong). But at the same time, I'm so exhausted by DS I don't know if I have anything left to give.
A belated happy birthday, by the way, and I'm so glad you had such a lovely evening - you deserve it.