My first gains. I think
Well I have not measured, but 2 days ago I commented to my Girlfriend during sex that she seemed tighter for some reason, and she just asked if that was a good thing or a bad thing. I did not see her the next day, and today we had sex and it felt even tighter, this time she asked me to go real easy half way through. She said that it hurt a little the whole time and felt like I was stretching her out.
So either she is exercising her cunt to get smaller, or I am making gains. What an ego boost for me.