Pregnant and dry heaving during sex.

Eleanor

I am 18 weeks pregnant. Everytime my husband and I have sex, when he pulls out, I have a bout of dry-heaving. My morning sickness has been bad, and recently it's started going away, but I'm not even nauseous during sex. Does this happen to anyone else? Last night was particularly bad becuase I ended up actually vomiting when he pulled out. It's become so frustrating.