I just wanted to thank you all for all of your helpful responses. What helped most of all was knowing that I am not alone.
My ABF worked late last night and then went next door to the bar for an hour. For probably the first time, I slept from 10 pm until 1 am when he finally texted that he was off work. I slept in patches from 1 am until he came home at 2, but I still have to work on that.
Anyway, while I did not do anything special in particular to get to sleep, it was awesome. My son woke me up at 6 am and I feel great.