Five days ago I felt a strong pain in my forhead; after taht I started tosee a purple shadow with my left eye. After a few minutes the colour changed to dark and finally to a pink colour. I feel pain on the sides of my nek and constant head aches. The pain in my head is more on the back of my head. Sometimes I lose balance and directions. Nausea is another symtom. I feel extremely tired and I lack energy.. Coul you please let me know what can I do. Sincerely, Yolanda.