feeling loose ?

I need some advice. So my bf has been making these comments lately to me that I'm loose and I do my kegel exercises I'm wondering could it be from having too much sex ? We have intercourse at least three times a day which I am definitely not used to maybe once every second day with my previous boyfriends, and it has been like this for seven months now. And it's like the sex isn't as good as it was before the last couple months like he's stretched me out or something he also has a big dick good 10 inches. Is there certain exercises or a certain way to flex myself that I'm just not doing right ? The only time it feels good is when I'm on top. Thsnks