Hi..
Welcome to HEALTHCARE MAGIC..
I have gone through your query and can understand your concern...
As per your complain all the symptoms of
Dry Mouth,headache and feeling of being unwell is due to
dehydration and you need not to worry about it..
You should drink plenty of water around 4 to5 litres,you can also add eletrolyte powder like Oral Rehydration Electrolytes in it..
Take clear broths, soups,juices as all contains water content and help in fluid replacement..
Take plenty of rest and a light nutritious diet..
Avoid strenuous work and excessive sun exposure to prevent fluid loss from body..
In case if you are unable to take fluids by mouth you can consult a physician and intravenous fluids can be given to you..
Hope this information helps..
Thanks and regards..
Dr.Honey Nandwani Arora.