Stubborn Clot Behind Severe Pain After Sinus Surgery?

16 days post op, sinus surgery - deviated septum, turbinate reduction, debridgement. Dr said more infection found than showed on CT. Extreme facial pain began 4 days post op - forehead, apples of checks, all top teeth. Spoke with PA who said it sounded like a clot with pressure behind. Saw Dr. 6 days post op for cleaning by suction of mucous, clots, etc. Very painful and I fought him off. Said he saw nothing unusual as in large clot. Pain has continued. Days since post op visit miserable with continued forehead, facial, and teeth pain. Thought I should be getting better. Continued to follow Dr's instructions to irrigate nasal passages with saline. Have seen small blood-tinged mucous and crusting rinsed away. Today, pain so great I have been unable to talk and considered going to ER. Have always gotten minimal relief from pressure with irrigation, so I rinsed 4 times today, back to back. This HUGE blood clot (obviously old as it was brown) rinsed out my nose. Immediately began to feel relief from pressure. I'm sure Dr. missed it because I fought him off (they need some type of anesthesia to do that!) but I am so relieved it has finally moved!