Let me just jump right into this.
Last night me and my lady were getting it on...and after about 5 pumps in (I'm surprised I lasted that long

), I noticed that something was bothering her by the way she was moving...I stopped and asked if she was ok, and she said it kind of hurt and she just wanted me to finish real quick. Knowing she was in pain, I decided to just stop right then (like I'm sure most of us would do).
Anyway, I asked her what was wrong (not just down there but everything in general) and she said sometimes when we are having sex it hurts her.
Now I want to be like "Yeah its my big package giving you all that hurt" but in reality I have a average if not below average penis so I'm sure the size isn't hurting her. She was also very very wet so I don't think it was too dry down there. Plus there have been times when I thought I was hurting her but she just wanted more and more.
She did have a yeast infection a few weeks ago, but that has been gone for well over a week. And this is the first time we tried having sex since.
So I'm just seeing if anyone has any suggestion on this...is this something mental (since I see my dentist more often than we have sex)? Is it possibly physical? She does have regular check ups at her OBGYN (I think).