I think you got a severe cold.

It would be better for you to go to hospital asking for professional opinion. Or in fact, medicine shop can give you some good suggestions too(I trust them).

Before that, drink some hot water and eat some vitamin C could help.

There are many medicines for curing cold, most of the medicines are efficient to me. But I am not sure which one is best for you.

I generally eat 白加黑(at daytime eat the white pill, at night eat the black pill)

And cold is a common seen disease, don't worry. Hope you get well soon.

感康

But only use it when you get severe cold. If you take it everytime, then gradually other cold medicines lose effect on you. It makes you sleepy and recover rather fast. The funny thing is that foreigners recommended this to me, twice.