5 weeks, 2 toddlers, 1 out of town husband, 0 energy, lots of an uneasy stomach :(

My husband is in the military and out of town for the next month, at least. I have a year old and almost 2 year old and take care of a 9 month old during the weekday. I'm at 5 and a half weeks and my energy is non existent and seem like I'm constantly dealing with various forms of nausea, though no actual throwing up. I was on a good schedule and and able to work out 5 days a week, but these first trimester symptoms have thrown a huge wrench in everything. Does anyone have any suggestions to increase energy and decrease sickness??? Or is it just a wait it out situation...?