I'm trying and cheated

I have been with my boyfriend for almost 7 years now. We've been trying for a few months now, and I took out my Mirena July 2017. We talk about having kids now, and wanting kids, but I'm very sexual and he doesn't like to have sex as often as me. If I could I would have sex everyday (it's the Scorpio in me), and I'm pretty much forcing him about 3-4 times a week. He goes out of town constantly and just recently I cheated on him. It felt nice to be f*cked by this guy. I have been fantasizing about this guy and his dick and it was everything I wanted. This huge was so huge, and thick....he gave me when I been needing.

I feel bad that I don't really feel bad about cheating.

Update: IM NOT TELLING HIM