Sorry - got cut off. I was saying, remember Quality Time is one of his languages - so running away into your own space when you have problems with him is probably NOT the right approach.
How can you pamper yourself, renew your spirit, rest up for this baby, but still give SO the Quality Time he needs? Get a little creative here. Stay out of picking fights, and remember to Act As If.
(Sidenote - lots of people have trouble with the whole Act As If concept. What they don't realize is, we are all Acting As If all the time - that is, we tend to anticipate certain situations, and behave in certain unconscious ways that tend to bring our very expectations to life. If you Act As If SO is going to behave badly and provoke a fight, the odds are much greater that will happen. If you Act As If SO is going to step up to the plate and behave well, he may not always do that, but the chances of it happening are greater.)