J.W.
Katheryn,
Do you get a break fr lunch? I used to work full-time when I was carrying my 2nd and I was exhausted too! I was one who often worked through lunch or entertained clients for lunch and I just kinda shifted my schedule. I didn't schedule any client lunch meetings and brought my lunch so that I could eat it later in the afternoon. Then I'd take my cell phone out to my car, park in a remote corner of the parking lot, set the alarm clock on my phone and nap for 30-45 minutes. It really helped me get through my evenings with the kids.
Best of luck!!!