I had a scary experience today and actually thought I might have been having a stroke for a couple of minutes (or some other scary medical thing). While my hairdresser was washing the toner off my hair, so I had been head leaning back in the sink for a 10 minutes, my scalp went completely numb like it had pins and needles. It was really weird and hurt a bit while while she was washing it off like she was scratching my scalp and pulling my hair. After I sat up it kinda wore off but it still feels strange now, like it could just go numb again..... has anyone else ever experienced anything like this? I'm a bit worried about laying down....