Yes, I have had the very same thing. Light headed and nauseated. It has happened when something struck a chord or a nerve. Topics that make me uncomfortable leave me feeling that way or things that dig around and stir more up leave me feeling that way. In the absence of emotion, I usually have those types of feelings. Sweaty, nauseated, stomach hurts, shoulder pain, hips hurt, lower back pain, headache. It's really messed up feeling but I have learned to just roll with it. I am not a crier and emotion doesn't come easily for me. Actually, it just doesn't come.