A Few Weeks Ago I Had What The Doctor Said

A few weeks ago I had what the doctor said was an upper resp.infection[viral],I am better now but still have days when my throat is some sore and don't feel so good.But the main problem is she recommended a sinus rinse called neil med.When I do this I can feel something in my right ear and when I blow my nose its like a bubbling sounds or air in my right ear. Now I do not have any discomfort in the ear just notice this after I use this product.I have for years had a cough[especially in the am]from drainage and hack and gag in the morning till I get cleared out. I am a nonsmoker. Thank you.