I don't know how to start.
Once, before sex, I have noticed a white, yogurt like liquid in my girlfriends vagina. It wasn't totally white, it was a bit clear too. That was a while ago. This morning, after we had sex, I noticed the same white liquid on my penis, underneath the head. Is this normal? I have gone in for many STD tests when I met her, because I thought I had something, but they all came back negative.