I took my OH with me - its actually easier cos they ask questions about both of your family histories (just about immediate family stuff - diabetes, heart conditions etc).
They talked about how I'd been, checked my weight and height, blood pressure, urine sample. They talked about what to expect the first trimester and at the first scan, what you shouldn't eat, about local aquanatal classes, just general stuff really. I could ask questions as we went along. It took about an hour or so. xx