First, I'm sorry about your m/c.
I don't have any advice, but I'm with you on the feeling nauseated bit and no O...Ever since I quit BCPs in June, I have noticed mild nausea beginning with AF to worsening nausea as O approaches. When I O, I'm always extremely nauseated. This month it's worse than ever, because my O is late, so I guess my body keeps gearing up to ovulate and then backing down

This means I get the nausea worsening in bouts and never completely going away. Over a week, I've been very nauseated and threw up too...It seems to be the way my body reacts to the estrogen approaching its peak, very annoying

At least, I have no temptation to overeat during this time.
Do you also find yourself getting moody? I have noticed this too. I don't seem to have PMS moodiness at all, but I am very moody as O approaches
I think my hormones are still out of whack from the pill and maybe yours are from the m/c?