Welcome to HCM.
Your symptoms are suggestive of flu like illness which is caused by virus called influenza
. Viral fever
is usually associated with weakness and myalgia and is usually self limiting. They subside within 7-15 days. You can take over the counter painkillers for the body ache
and rest is a must. I suggest you sleep as much as possible and have a nutritious diet with adequate water.
Headache could be due to sinusitis
. Steam inhalation would help relieve the headache.