Thanks for posting this query in HCM
Your headache could be related to flu. If you donot have neck pain
, memeory problem you can wait or get evaluated by a physician. I think it will improve with time. You may take simple analgesics for the same.
Increased urination could be due to many causes like infection in urinary tract
(particluraly when you have fever
I urge you to get examined by a physician who will assess you clinically and then determine the necessary investigations to reach a conclusion so that management will be easy.
Hope this clarfies your query