Sir I understand your concern for your health condition. As per your history I am not able to make out about your age. But since you mentioned here that your symptoms are for last two weeks only associated with slowness of work. See there certtain possibilities for this pain such as tension headache, migraine in younger people and features of parkinsonism in older people. I would suggest you to consult your doctor and get it evaluated in detail so treatment for the same can be initiated soon. I hope my answer help you to solve your queries.