We definetly had this as well.

In early PG, he was feeling nauseous and getting little crampy pains in his abdomen, I had nothing!!

He does wake up now, but I think that's because I am restless, and tossing and turning sooo much, Plus I snore more now than I used too.

Now that I've finished work, and the sleep is getting harder, I have been getting up and going to watch telly in the lounge so I don't wake him up