Left ear almost feels clogged but no ear wax in it, voices sounds almost robotic. only started this morning. help please?

Inner ear clogged: I wonder how you know there is no wax in your ear. I would need to look in the ear to figure that out for sure. Sudden changes like this seem like a congested nose blocking the eustachian tube, with no pain an infection is less likely, not impossible. It may get better with Flonase. You should see a doctor in person for advice specific to you.