You need a rest.

You need to have your throat examined to re assure you all is well, or all is not well. An ENT specialist is the only person qualified to do this.

Lets assume your results come back clear, no nodules polyps or signs of acid reflux the chords have not atrophied.

The problem needs assessing as being pyschogenic.Speech therapy is the next option for your road to recovery in addition to taking singing lessons to assist you rediscover your voice. Again it is no use seeking help from an unqualified source, a voice guru or vocal coach....but a properly qualified singing teacher from a recognised authority in music education sadly this does involve expenditure.

Even if your results come back as showing the signs of ageing vocal chords, acid reflux these are both areas that are treatable. The latter via your GP and other health professionals the ageing voice by a singing teacher.

If you have nodules or polyps a rest of several months during which you increase your water drinking threshold should be enough to naturally clear them. If not you will need real time out to allow for surgery and botox.