Lets get one thing clear... It is up to you to make a decision and stick with it. Do you love your Husband? I am going to assume the answer is YES! Do you want him grovelling at your feet begging for your forgiveness for the rest of your life, or do you want him to be able to come to you in HIS time and tell you that he is sorry? It will happen, when he is ready, trust me on this. It can take a good year or more for things to begin to return to normalcy, piecing is harder then anything else. Each time you bring things up, you are NOT building trust, you are tearing down walls.. You keep opening up a scab and not letting it heal properly. The scar will always be there, but how much it shows is up to you and your self control and obsession over the situation. No more contact for you and the OW. Let her be now, she is out of the picture, and if you are harassing her you will be the bad one, I know, I have been there too. Right now your only focus should be on restoration, and peace. Trying to have as much normalcy as possible and not letting the crap of the past get into your head. The details of what happened will crush you right now, because you are NOT ready to hear them at this point. And what is it you want to know? Was she better then you in bed? What lies he told both you and her? Why open up this can of worms? Look, you have what you thought you wanted, he is home. The OW is a nothing, leave her behind. Life is too short to waste on trivial stuff. You don't need anti-depressants, you need to just lets things be, learn how to forgive and work on your marriage.
There can be no testimony without a test. I am praying to go through this test and come out the other end with a new and better marriage then before.