Is wife having with chiropractor?

In my experience with my ex she will probably not confess if she is being unfaithful so I wouldn't put much emphasis on that at this point. What I would put emphasis on is the fact that she is flippant toward you and your concerns and insecurities which are all very legitimate based upon what you have said. She clearly is not trustworthy or dependable and that needs to change if your relationship is to make it. Purchase the book "Boundaries" by John Townsend and Henry Cloud" (available at most book stores) and start to set boundaries to protect yourself. Not to control her - but to protect yourself. Request that the two of you attend counseling if you can afford it. You are in a painful and difficult situation and my heart goes out to you. Keep your head up. Set your boundaries. And know that her treatment of you does not define who you are as a person. My best to you.