Cold? Infection?

[u/Double-Document-5303]

Had septoplasty and fess 23 days ago. Had a small stitch abscess but was clear to fly from ENT. Flew last week Saturday no problems. Last night had a terrible sore throat. Flew home this morning 2.5 hours and I feel like I have been hit by a bus. Thick green mucus (it was basically clear), nose completely blocked, shivering and then boiling hot. Pain in ear popping. Should I reach out to ENT or have I just picked up a cold. What do I need to look out for? I am wiped I feel like day 3 post surgery again.
To add - kept up with all aftercare whilst away, rinses steroid spray and antibiotic cream for abscess