Sounds like the cough Paka and I have. Do not consider it lightly. He characterizes it as the worst in his life. I don't, but I was part of that whooping cough mini epidemic about 4 years ago. Sleep when you can. Musinex DM. LOTS of steam therapy.
And personally, I am on amoxicillin for the secondary sinus infection, and have been following a family folk remedy of vicks vaporub on my feet in double socks before bed.
I hope you feel better soon.