8 weeks pregnant

Hey everyone, 
I am currently 8 weeks and 3 days along and the morning sickness and fatigue is killing me! I can't eat and I can't sleep. Recently I'm having some issues with my employers about my performance at work and it's all because I'm pregnant. My energy level and my motor skills have seriously been impacted. This situation is stressing me out, my job is easy...it's not rocket science. 
 I've already told them that I am leaving in August and I won't be returning, I think this is part of the problem. They aren't good with change, they think everyone's out to get them and they hold grudges.  After this mornings confrontation , I am seriously considering handing in my letter of resignation... It's already typed up and ready to go. What do y'all think?