bro. sorry about everything that happened to you. but is better if u wake up from ur nightmare and go talk to a lawyer for advise because if u don't do anything you can finish losing ur son... and talk to a professional too because if u are in depression that is no good for u or for ur son.
also sorry about what am gonna tell you but the way u describe her that sound more like if she alrdy sleep with somebody else >.> don't get me wrong but wake up bro... take care of ur son.because no fking way she hitting with others guys in the media... btw did u try to talk with any of her brother/sister or any familiar related? try to work something out >.>