He was rubbing against the outside of my vagina but never entered inside me. We were both fully in the nude and no protection. Is it possible for me to be pregnant? The reason I'm asking is because my next period has been been acting really strange. It's lighter than noramal and almost near non-existant. But I have skipped my period before, and I'm light as it is. However, all the other menstrual problems I normally have, I've been having. For example, breast tenderness a week before, tension headaches, extreme cramps, back pain, nasea, and lightheadedness. I'm just really scared right now. Can anyone help me?