Sinus infection early pregnancy?

I’ve read a sinus infection and early pregnancy are linked. I took a pregnancy test on the 20th and got a BFN :( and later that day got my period, which ended today. I started getting pressure in my ears and feeling super stuffy in my nose. I’m not sure if it could be due to the cold weather? Or ifs a sign :( any suggestions on how to get rid of this thing to lol.