What can this be?

So a few months ago me and my bf when on vacation during the weekend we some rough sex and after it hurt it felt like a cut deep inside all the way up inside on the right. For about a week we couldnt do anything or I would get that cut feeling. Now it s better we are back to our Normal sex life and it doesn t hurt when we do it the problem is sometime just that one little area inside still feels like their is something there but than when I have sex it fine I looked and just that piece looks irrited. I had my bf look and I looks kinda of like an extra piece of skin. I am going to the gyn soon but I want to know what people think to help me know what to expect. Again it just that little piece inside the right lip the rest is 100, fine. Any idea what this could be by the way I have been on bc for 3 years