I Can’t Believe This Is Happening To Me. What Was I Thinking ?

My daughter and a friend wanted to go on spring break so my husband and I decided I would take them. We went to a popular beach in Florida for a week.
The middle of the week the girls had gone to the beach and I stayed at our condo. A while after they left one of the guys they had met came by. I have to admit The first time the girls had him a the condo I had found him very attractive.
We chatted for a while with it being obvious he was flirting with me. When he touched me on the arm I smiled then he leaned over kissing me on the cheek.
When I didn’t resist he put his arms around me kissing me on the mouth then we kissed a few times very passionately before he ran his hand in my bikini top playing with my breast.
It didn’t take long for him to have me very aroused so I told him we needed to stop but instead he pushed me down on the sofa quickly pushing the crotch of my bikini aside starting foreplay.
That was all it took to put me completely in the mood so I asked if he had a condom because I’m not on birth control which he said he did.
Off came my bikini bottom he got the condom out dropped his shorts putting it on then made love to me until I was completely satisfied having an amazing orgasm when I could tell he was cumming thankfully in the condom.
The experience was very enjoyable and I didn’t see him any more after that then we returned home on Saturday.
Then a couple of weeks later I realized I was late. I immediately took a pregnancy test which indicated I was indeed pregnant. The problem being my husband had a vasectomy after our last child so there was no doubt who had impregnated me in some way.
I went to my obgyn who prescribed abortion medicine to end the pregnancy.
As far as my husband knew I just had an abnormally heavy period.