Morning Sickness - What can you eat?

JoAnn

After 18 months of trying we got our BFP this morning! We're so excited. (I tested at 2:30 this morning, cried like a baby when I saw that pink line, and didn't sleep the rest of the night.)

Based on LMP we're at 4 weeks today. And the nausea has already kicked in. Nothing sounds good at all. But I know it's important to eat.

So do you have any foods that you have found easier to eat with the nausea? Any foods you absolutely have to stay away from?