Welcome Munchkin,
I think it is so important you get support, the gym thing won't really cut it for long.
Is there a support group of young mothers that swap babysitting time with each other?
I really believe that if we want something bad enough we will find a way.
I do understand you wanting to just take time out to heal yourself and then come home stonger.
You can do it .
All the best
CaiHong