So, call me Columbo - I've figured it out. Nights that I take 2 Tylenol PM (totally safe according to my OB), I wake up feeling good and have a puke free day. Nights that I go "natural" and don't take any PM, I wake up feeling pukey and gross.
So, apparently if I drug my way through the first trimester, I'll be golden. So that's my plan.