welcome to healthcaremagic..
wel u must know first that as u are having fever you are having infection because fever is sign of infection most probably in ur case a bacterial infection.. and as you have already completed a course of antibioticcs for sinus
and inner ear infection
and now the infection has reocurred then it suggests that the antibiotics which u took are resitant to the bacteria.. because if any ent infection reoccurs after taking antibiotics with 3 weeks then it suggests an antibiotic resistance
so i would suggest you to get culture and sensitivity done by a throat swab.. till the results come u start taking higher and better antibiotics like cefuroxime
combination tablet 325 mg twice daily for 7 days..
and yeah your other symptom of increased frequency of stools may be due to the side effect of the antibiotics.. to overcome that eat a bowl of curd or yogurt daily and take sporolac capsule once.. only one capsule..
i hope i solved ur query..
i wish u a speedy recovery.. :)