Hi, I am sorry you are here and I am VERY sorry you are facing infidelity. I am on the same boat.
Please let us know more about your story so people can suggest, advise or just support you better. Take care of yourself and try to calm down if possible. If you just found out, emotions can be very intense. K
PS FYI 99.9% of the people here face infidelity whether they know it or not. You are certainly NOT alone.