It is good that you posted. This site is to help people and to listen. You really are having a hard time with 9 people in the home. Any injury would be difficult to get over in a house like that with constant noise and arguement. There are patient advocacy groups in your local hospital. Maybe they could direct you to some place where you could have a spot on your own. I think the only way you are going to know peace is if you leave that home. There are alternatives other than your aunt and Uncle with whom you only see twice a year. However under the circumstances, if there were any hope of that I would write to them and tell them of your circumstances. I do know that TBI can be really difficult to deal with, and it takes some time to heal.
Your EX fiancee is an X as you said. You don't have to keep ties with her as much as you do with your son. You can still do that and have a place of your own. Look into getting some help, so that you can have some quiet to be able to heal. I hope alot of others come by to talk to you too. It is not a bother. I am just sorry you are going through TBI and have to live in an upsetting environment.. Maybe others will have some better advice than I do too. I will be thinking about you and praying for you that you can find a solution. ginnie