I'm so tired. I slept 8 hours last night, took a 2-hour nap, and after working an hour and a half (I work on my feet) I'm exhausted. Thinking of taking another nap instead of making dinner. I'm 5 1/2 weeks. Does this last the whole 1st trimester? Someone told me it should ease up in a few weeks, though morning sickness will increase around that time. Anyone have experience with this?