Sinus inflammation—overused sinus rinse?

I had some cold symptoms like minor nasal congestion and postnasal drip so I was using a sinus rinse about 2-4 times per day for the past week or so. My sinus now feels more inflamed and though my mucus is clear when I do a sinus rinse (no more yellow mucus), my right nostril feels blocked often and I can't get it to shift unless I lie on my side to move the blocked feeling to the other side. In general my nose feels a bit sore and more congested.

Is it possible that using a sinus rinse so often per day has dried out my sinuses and is CAUSING this inflammation??? I'm worried I've sinus rinsed myself into an infection or done permanent damage to my sinuses. Would using a saline gel or saline spray help to alleviate the dry sinus or would I be making it worse?