Reflux symptoms. Started n for how long!

I have acid reflux symptom I m taking nexium and gaviscon and also lifestyle modification and dietary changes .. it improving but not cure permanently .. I m in portugal it’s costly to see a doctor . So started this medicine by using Internet .. but the irritations d and burning sensation in throat still remain .. not curing from 2 months .. I done my endoscopy it’s normal .. my friend has also same problm in india .. I ask him to send his prescription so that I can also buy from here that medicine .. his doctor prescribe him ppi anti acid and antifungal medicine and a antibiotic injection .. can u take antifungal medicine for throat coz there is started white patches on tonsil and on the roof inside may bhi it’s fungus .. if I can start how much dose I Started n for how long