Please go easy on yourself. You are still so new on this ride. For many of us, myself included, the shock of the betrayal wears off months after Dday and the pain is raw....rage and anger set in for me about 8-9 months out from Dday.
Best advice I received when I came to SI was that I didn't have to make any life changing decisions for a year....to just take good care of myself. It took about that long for me to get through the pain so I could focus on healing and my H was remorseful and has done whatever he can to help me heal and build a new marriage. Heading toward four years out now, I can say I am happy again and life is good and our marriage, though changed, is a good one. I am glad I stayed and so is H.
Keep reading, keep posting, journal your feelings and take good care of yourself. Things will get better but first we have to get through the pain to get to the other side.