Slowly and steadily, you're pulling her back in. Even if you don't, you sound 10x better than a few weeks ago.
Distract that young man with reading him a book or whatever crap tv shows are on for that age group today (I had to suffer through Teletubbies -- sadly, it broke you down after a while). Color with him. Maybe ask him to help you draw a picture of mommy.
You may need to let the potty training go. Our oldest hit 2 years old and basically trained herself. Our youngest got semi-potty trained at 2, then regressed and didn't make it until right at three. I think you said your son is 2 and a half? Give him time. I've heard from a lot of parents that if they miss that 24 month window, it usually doesn't happen until around 3. I'm sure pediatricians know why, but group wisdom says it's a fact.
My latest
Me: 36 W: 35 2 D: 9 and 5 T: 16 years M: 12 10/4/06: Bomb 10/5/06: Ended A 4/22/07: ILYBNILWY