Fatigue

How do you push past the sickness and fatigue during the first trimester to exercise? I have a 3 year old and work full time (8-5) I come home eat dinner bathe my toddler and I’m done for the night. I feel so lazy but I’m ill and so tired. I focus on my daughter but I want to stay active. Going to a gym isn’t going to happen. I’m at a loss here.

Please offer advise!