Hoarseness after General anaesthesia.

I had undergone an arthroscopic shoulder surgery with general anasthesia 30 days back . Right after surgery , when I open my eyes , I could feel pain in my throat and I tried to speak but voice was not coming . I asked surgeon about it and he said it is due to intubation and voice will be back in couple of days . Voice did not become normal after 7 days so I consulted an ENT doctor and they took endoscopy and I am attaching the report . I followed one week of voice rest (not so strictly ) but voice was not back . I consulted one more ENT doctor again then . He said I have to go for absolute voice rest for two more weeks and gave some gas tablets too.. I completed one week now and one more week I have to be on voice rest .. Why it is taking this long time .. Was not I supposed to get my voice in couple of days .. I am attaching the medicines I took after discharge for 10 days..