Red Patch on Tongue

Red patch on tongue, has varied in color over the past 2 weeks. Some days I feel like it’s fading, other days it seems red, maybe irritated by food. Located on front side of tongue. I feel like I had redness there about a month ago, healed, now back. Dr. said it’s an ulcer that should clear up but it’s not like any canker sore I’ve seen before. I did start minocycline 2 months ago for rosecea but was told that shouldn’t be an issue. Not really painful but there is an inflamed taste bud there as well. I do have an appointment set with mouth/throat Dr. if it does not clear but I’m impatient and reading about potential issues online can do bizarre and unhealthy things to your mind!

The color has faded a bit since I’ve used a biotene mouth wash.

Anybody have a similar experience?

Updated photo, the cracks have been there but more noticeable in this photo.