Is there NO ONE in your family you can go to that can take you in?
Don't sign a lease there with him under these conditions.. HE's trying to bury you there...
Get to family or a friend and take the things somewhere SAFE...
I am having it hard to believe you can't get out of there...
I understand you want the kids lives stable... BUT if YOUR health gets worse then their lives will be unstable anyways.
For the kids to be stable YOU need to be, and you can't be there...
They can deal with a school change... They can't deal with a mother who's emotionally unstable...
You cannot fight an affair like this while living there... You need to get OUT of there to someplace SAFE.. If the kids have to have their lives uprooted for a SHORT TIME that's ok
YOUR health is most important here.. if you arne't healthy the KIDS SUFFER
GEt yourself to a healthy place and stop making excuses ...