@ tsar
Sorry to be the one to leave you bad news, but if your dominant symptom is cough, then you have been taking the wrong medicine for it.
https://salemthegame.wiki/page/Disease ----> What you need is willow bark tonic
<----And since you have been taking a lot of salts or other medications to cure the wrong disease, then you will need a lot of
extra doses of the correct medicine to cure yourself now.
It sounds like you don't have much time, so if I were you I would just log out and use another character to bring your sick character the tonic, or have another player bring it to you.
Good luck.