vaginapagina | Irritation around vagina?

So probably 4-6 days ago I finished my period, and yesterday (27th-7-2015) my boyfriend and I did some grinding naked, without lube (so we relied on my natural "lube" and saliva)

I now have an itch above my clitoris? I've had a yeast infection before, and it doesn't feel the same so I've ruled it out (but not completely) and I've also got some random white stringy discharge around the clitoris also. I find my whole vagina to be a bit uncomfortable, but I read that it's common after sexual action? Is that true?

I don't think I have another yeast infection in such a short time, but I can't rule it out completely because I don't know how many times you can get yeast infection.

Does anyone know what it could be? Or is it simply because of what my boyfriend and I did last night?