you clearly are very good at putting up a good front.... no-one can see you are suffereing, not even those closest to you.
Well, it's kinda not working too well for you is it? I understand the thoughts about not wanting to tell your friends, when they all know DH, so you feel you have to pretend everything's fine.
Sorry to say, but if you allow that situation to continue, you will end up being more than a little bit depressed, and that's not anything I would wish on anyone. (Well, nearly anyone )
Hmm, shame about the builders, but then use the time that they have you tied to the house to research things you are going to do when you're not babysitting them/protecting your worldly posessions.
Main thing, if it helps you in anyway at all, is to keep talking.. to us if that's what helps you.
Don't isolate yourself, you've reached out, and there are things you can do to better your life, just find out what is going to give you most joy, and do it.
For example, do you enjoy cooking? while you are tied to the house, why not buy a new cookery book and experiment with new recipies.. it may even give you all a new talking point?
Don't be distant with DH over the wedding, men are so often like that, utterly clueless. They don't do 'subliminal' messages, if you are feeling fed up at a do like that, you have to literally tell them!
Sit him down and explain what and why you were feeling that way at the wedding.
Perhaps come up with a signal for future occasions, so he knows that when you tug your right ear, you are at the end of your tether etc.
My DH and i are from different cultures origally, but we do speak spanish as another language, and tend to communicate in that if we don't want others to catch on... of course back in europe, it's not as easy as in his country, but you get what I'm saying.