Hi welcome to HCM.... Here otitis like ear infection is seems to be present as earche was there ... Also sore throat is present so secondary ear drum swelling might be there via eustacian tube .... You needs to given decongestent like benadryl.... Steam inhalation done two times a day.. Drink more water. ... Avoid excess spicy foods ... Also get checked your ear examination be otoscopy if inflammation swelling more than betamethasone 0.5 mg prescribed for five days .... Self medication should be avoided .... Your headache is reffered headache ... It could be viral infection also which can lead headache ... Excess work on computer , lack of sleep , hypoglycemia should be avoided. .. Take rest ... Take care Advise : Consult otorhinolaryngologist or physician for examination.....