Hello and most welcome to HCM,
I have very carefully went through your descriptions. I should tell that you have written the history very nice. Anyway from the history of repeated
ear infection, cold,
nasal congestion (got relieved by
steroid) and also considering the age of your child i assume that you are in right track BUT i would like to add few suggestions. Straight away,you should get an X Ray
nasopharynx done with a Diagnostic Nasal Endoscopy(DNE) if feasible. This is to rule out any
adenoid pathology like hypertrophied adenoid. I have not examined your child but the detail history you provided, i have an instinct of adenoid pathology. ALSO get a "throat swab for culture and sensitivity" and antibiotics should be based on that. So, to summarize, please get done -
(1) X Ray nasopharynx ( if possible, DNE/ done by a Doctor)
(2) Throat swab Culture and sensitivity.
Always, take consultation of a local ENT doctor before proceeding.
Thank you and I wish you an early recovery of your child. God bless her