Yeast infection - pain and itchiness ?

Hi,

I've been experiencing some symptoms recently and am unsure of what to make of it. I'm planning on going to see the doctor, but am wondering if anyone would be able to tell me what I might expect.

I'm on birth control and have been with the same guy for a year and a half and we've never had any problems, but last week sex got really painful and I haven't had any since. It felt almost like tearing and hurt both on the inside and the outside stung on the outside, especially after I went to the bathroom or took a shower.

I've also become a bit itchy down there, especially kind of inside my lips, if that makes sense. I haven't noticed any smells, though, and my discharge seems normal - at the very least it isn't "cottage cheese like", as described in most yeast infection symptom lists.