Would prefer a homeopathic remedy for rattle/cough that clears when lying down?

I have rattling/wheezing/gurgling in the upper part of my chest/lower throat. The cough seems like it might get the rattle out but nothing comes up. My nose is also stuffed up and in need of blowing almost constantly unless I am lying down. When I lie down, the nose and throat clear up as if there's no problem at all... then I just have a little tickle in the back of my throat that causes a little cough occasionally as if it's healing.

Does anyone know what this is caused by and how to fix it? I really prefer homeopathic remedies when I can.

It started on Monday, March 15th with the coughing and added a sinus infection the next day (which I am prone to this time of year thanks to allergies.) The sinus infection has gone now, except for blowing my nose a lot (not that odd for spring, however)

But this coughing is really getting on my nerves. On the few times I've gotten anything up it's been a tiny amount of clear, liquid mucus not much different from when I blow my nose.

Any help would be appreciated.