Raising Arrows has some encouraging advice for homeschooling mothers who are struggling with morning sickness. I know I found this encouraging when I was in that position!
Here is a taste of that advice:
*First off, give yourself a break. Morning sickness is not for the wimpy. It takes a lot of energy to lay on a couch and try to convince yourself you will survive. In fact, it takes a lot of energy just to make it to the couch in the first place (unless of course, you spent the night there). So, give yourself permission to take a break from all things.
For more encouragement, read the rest at http://www.raisingarrows.net/2010/03/homeschooling-and-the-morning-sickness-factor/