I’m sick and exhausted

For the past week I’ve had a cough, I’ve had this particular cough before.

When I get a tickle in my throat, a cough will not make it go away!! It literally makes me gag and them throw up.

And this mainly happens at night, but once during the day.

I’ve tried teas, honey and lemon. Dr said I could have robitussin. But besides that said I should be fine.

But nothing is helping! I have a humidifier in my room and just breathing is making my throat tickle and I’m beyond exhausted. Only thing to do is take a hot steamy shower but that’s temporary relief😭 please I need suggestions