Cheating-need advice

​Last summer I cheated on my husband. It was with one of our good friends and it seemed like whenever we were around each other there was SERIOUS sexual tension. We held out for a long time, both knowing it that tenson was there but one drunken night we slipped up and it continued a couple times a week for about 2 months. Some of the hottest sex I've ever had but I'm sure it was soley cuz it wasn't supposed to be happening. I love my husband very very much but I can't bring myself to tell him and I just don't think I ever can. I haven't had inappropriate contact with the other guy since we decided we needed to stop since he too was in a relationship. It's easily the worst thing I've ever done and the guilt eats at me. Shortly after stopping the affair, my husband and I started TTC. After a few months of trying we got pregnant but it ended in a MC and I can't help but feel like that was my punishment for my actions. I'm now pregnant again and even tho I don't have contact with the other guy I feel like my punishment is not quite over and I may mc again. My relationship with my husband is now fantastic and like I said I love him very much and wouldn't trade him for the world. I'm afraid if I ever told him it would tear apart our marriage and now growing family. Would you tell him? Or take it to your grave? It is something that will NEVER EVER happen again! It was never worth losing my husband over so I don't want that to ever happen!