My ex continues to ask my son if he is okay during visitation.?

You and your ex both are in a highly charged atmosphere right now, lots of emotions reeling around.

Parents care about their kids -- she's asking if he's OK. You, like her, are sailing uncharted seas, and there's nothing wrong with her being a bit overprotective -- the child is in new territory, too, and so he's extra vulnerable to any kind of stress. Chalk this up to her being protective of the child, and to you being sensitive to what you perceive as her not trusting you and/or trying to get under your skin. She's not trying to do that - she just loves her child, same as you do.

Did you actually get a divorce, including Child Support and Custody papers, or is your "ex" that in just words alone -- you are still legally married?

If your divorce is fully legal, then state laws guarantees you certain rights, but telling your ex what she can and can not talk about during visitation is not one of them.

However, if you can PROVE that she is doing this to (A) pry iinto YOUR life, or (B) make the child uncomfortable when in your presence, then you have a possibe reason to go BACK TO THE SAME COURT THAT HANDLED YOUR DIVORCE, and ask for help in enforcing the terms of the divorce.

In some cases, one parent "bad mouthing" the other parent can be construed as Parental Alienation. While not yet fully accept by either the Psychological world nor the Legal world, sometimes this can make a strong impression on the court, and possibly get some very severe changes in visitation rights and even changes in custody.

But to fight this YOU ARE GOING TO NEED A LAWYER.

Ask ALL of your further question to your lawyer.

Stop letting her irritate you. Your ex is worried about the welfare of your son. That's not a bad thing. You can't forbid your ex from asking her child questions, nor should you. If you try, it will make it look like there really is something to be worried about.