I am farely new to the sport.  I have 32 jumps and just recently a couple hours after landing I couldn't breath out of my nose and when I swallowed my ears would clog.  The first time it happend was when I did 5 jumps in one day and it happend again recently after just a couple jumps.  I pressurize ok on the way to altitude and I have never had problems after opening.  I have never had sinus problems before either.  I also have to blow my nose for about 3 or 4 days after and there is never any headache or pain, just trouble breathing.  Any one had anything similar?