Thanks for writing your query.
Sometimes viral fever
is associated with rashes. They will eventually disappear once you remain afebrile. Still medical examination is needed to rule out other causes of rash along with fever.
You should get following investigations :-
1. Complete Blood Count
2. Chest X-Ray (PA view)
3. Sputum examination
You can take antihistaminic like fenofexadine
120 mg once a day for cold and cough, paracetamol
500 mg for fever and antibiotic if needed, according to the reports of investigations.
Mucolytics like bromhexine
or ambroxol can be added to release and cough out the sputum.
Steam inhalation will also help to cough out the sputum easily. Chest physiotherapy
will also be beneficial for this.
You should take medicines only after getting yourself medically examined by a Physician.
I hope this is helpful to you.