Hello, i am having ear pain and tinnitus

Hello, i am having ear pain and tinnitus issue since about 6 months after i fell down from bike and was protected with helmet, there after the internal sound was occasional and there was no pain that time, but now internal sound is all the time and its too loud and regorous pain often, i can feel that i am having moderate hear loss in L ear and mild on R ear and the same was confirmed via pure tone audiometer test. Now the biggest concern is i am working in a BPO job where i have to use headset, prolong usage of the same caused more pain and the internal sound is annoying too. so tried managing calls over the speakers but yet the internal sound is persisting and causing pain in internal ear. checked with many doctor but didnt got proper solution. Please advice if in this condition is it recommended to work in a BPO with head set ? without head set ? is it ok on speaker phone ? as many doctor said to avoid exposure to noise as it will leads to haring loss if i continue to do the same.