Ringing in the ears. To do with this?

One day while waking up, I suddenly started to hear some high pitched ringing in the ears. After going through some articles, I found it is SUBJECTIVE TINNITUS. I'm hearing in both the ears, sometimes if feel like coming from the head. No ear pain or discharge or fever. Consulted a nearby ENT specialist, he said no ear wax buildup and ear looks clean. Preferred some antibiotics for meinere's disease and common cold. I took it for 5 days and the issue not resolved. After took an Xray, he confirmed it is sinus and prescribed the same medication again for 5 more days. Symptoms not resolved this time too. Now it's almost a month, still having the tinnitus, nasal congestion and sometimes feels the head is pressurized. Is it surely sinus problem ? Or I need to worry about hearing loss. I'm a normal user of headphones for past 6 month i spent some time in gym and soaked in sweat, will sweating have anything to do with this ? Pls enlighten me doctors, I'm terrified.