Ongoing irritation where dental crown was placed?

Long story short; I was told I needed 2 crowns. After placement of the crowns, I noticed irritation in between the crown and the adjacent tooth. Something is very sore when poked and it may also bleed. My dentist adjusted the crown saying that there was a little piece that wasn't flush. However 3 years later, the area between my real tooth and crowned tooth is not normal. It will bleed if poked at the right angle with a proxabrush. Should this crown be redone?