Your post is hard to understand, so we can't tell you what you should do.

This is a Q& A forum. You have not asked a question.

Nobody sues for "bleeding and swelling." The cost of litigation is too expensive.

If their name is on the title, it's their car. Make nice. You aren't going to sue your parents.

No lawyer can judge a case based on a one paragraph blurb on the Internet. There are simply too many other factors.

You can use the Find a Lawyer tab above.......

Of course not. The doctor is telling you the results.

No, because you have no right to free speech on Facebook.

No lawyer can predict a case, especially when we have none of the evidence. But he will know who is accusing him.

IMO your lawsuit will be unsuccessful and will cost you a ton of money to pursue.