This Didn’t Work Out The Way I Expected

My husband and I have been married for19 years. A little over a year ago I found out he had had an affair with a divorced friend of ours. We separate for a few weeks but worked things out getting back together.
In June I was in Las Vegas for a business conference. That evening I was in the hotel casino playing the slots when a nice younger guy sat down at the machine next to me striking up a conversation.
During the conversation he invited me to have dinner with him so not seeing any harm in doing so I accepted his invitation.
We went a nice restaurant in the hotel where he order a bottle of wine with dinner. I don’t drink a lot so I got a little tipsy opening up to him about my husband’s affair. When he asked if I’d ever considered getting even I told him I hadn’t but for some reason I saw the chance to have a one time fling.
After dinner he walked me to my room and I didn’t hesitate letting him follow me in. We sat on the bed kissing for a while before he ask if we could have sex. I told him yes but he would have to use a condom because I wasn’t on birth control since my husband had a vasectomy after our last child was born. Honestly I would have probably done it without one but he was prepared so I was more relaxed knowing he was using it.
He made love to me for an amazingly long time bringing me to a climax twice with the second one being incredibly intense.
I came home completely satisfied going back to my normal routine as if nothing had happened except I had had my revenge.
Then my period was late but I didn’t panic because we had used protection. However after a week I finally took a pregnancy test which confirmed I had gotten pregnant.
I had no choice but to confess to my husband and make arrangement's for an abortion.
We are now again separated but hopefully he will forgive me at some point for the mistake I made.