Second Trimester: Pedialyte

Dealing with Morning Sickness...

I am seven weeks pregnant with my first child and am struggling with morning sickness...or actually ALL DAY sickness. My husband and I are waiting to tell our families when we're past the first trimester, but I have to be in my sister's wedding this weekend and am worried about everyone being suspicious about my ill state of being. What seems to work best for taming nasea?