You concern looks like there is some issue with you vocal cord. There are quite a lot of causes for this. Throat infections, straining the cords - this can be caused by high pitch singing, bad food habits, any unusual growth in the throat, etc. Take lukewarm water always and avoid anything cold. Avoid singing or speaking for long time in high pitch. If you don't recover with simple steps then you have to consider diagnosing and getting treated. Consult an ENT