Strange sensation in my ear?

All morning I have had this really bizarre sensation in my ear. It feels like something is crawling in there (PLEASE don’t encourage me to believe there is an insect in my ear, there is probably nothing that would scare me more.) It doesn’t appear to be moving around, it’s just this really weird tickle in the same spot that is really strong, but has been coming and going off and on for about 6 hours now. No pain, nothing else really.. just this really unusual sensation.
It’s the weekend, so I’d have to go to the ER to see a doctor. Any ideas? Should I be concerned?