Hiya! I'm a 16 year old girl and I just masturbated about 20 minutes ago, but I feel really weird now.. I was nude when I did it and afterwards, I waited a bit to cool down then stood up to pull on some clothes and wash my hands, but when I stood up, my legs felt really shaky, as if they were shaking, only they weren't physically shaking. I ignored it and got a shirt and some shorts on, then went into the bathroom but then suddenly I felt really light-headed and dizzy, and as if I was falling backwards but I wasn't actually moving. I did what I had to do and came back in my room, and now I'm lay on my bed and I'm feeling a little better but my head still feels weird, like I'm not all there. I've been masturbating (to orgasm) once every couple of days for about 3 years and never been like this before. Could it be anything to do with tiredness, as I've only been getting about 5 hours per night for the last week? Or maybe stress, seeing as my GCSEs start in 6 days?