Hi, I took a Yoga class earlier, followed by Pilates class, I got very dizzy from downward to upright. Light headed all day, even after a high protein green lunch and 4 bottles of water. I came home and just rested; still a bit light headed, slight, slight ache in left arm (not first time, always chucked up to stress and tension) took 2 aspirin 30 min ago. Thought I d be feeling better by now... not sure what to do?