i put in my two week notice, wishing i could leave sooner

i work as a TSS / BHT at a daycare. im 31 weeks and just put in my two weeks bc i am at that point where im just exhausted all the time, getting braxton hicks regularly, and just wanting to spend as much alone time with my 3 yr old before our new one comes.

i feel like its dragging. my boss was totally understanding and asked me to finish out last week and put in my official notice on friday. of course i said yes bc i love the company and hope to return when my children are in school. the only problem is how much i dread going bc im just so beat all the time. any advice?