It seems from the history that you are having cold
and headache. Since you have mentioned that headache worsens on bending forwards it indicates probably sinus related headache in the form of sinusitis
The treatment is by use of antibiotics to control infection decongestants, mucolytics for symptomatic treatment of sinusitis. Since you are using only analgesics in the of ibuprofen
it is not responding.
Hence I advice you to consult your doctor for examination and treatment accordingly.