How can I unclog my ear?

My ear has felt clogged for about 5 days now and I'm starting to get worried. When I'm sitting in a chair and I tilt my head back to the point where I'm upside down, my hearing comes back temporarily, but as soon as I'm back in an upright position my ear goes right back to feeling clogged and my hearing out of that ear is limited. I don't really have to money to spend on a doctor right now so I'm looking for some proven home remedies.