Yes about every 3 weeks I would get a flare up like that

I mirror what you say there as I too don't have a themometre but frequently feel like I'm running a fever ect

I feel like I do but don't have a thermometer. When in a bad flair I do have the same discomforts, to put it mildly, of having a decent fever, so my guess would be yes. I hope that helps.

Yhank you guys your answers were very helpful

A normal body temperature can have a wide range, from 97°F (36.1°C) to 99°F (37.2°C). Mine fluctuates in between those numbers all the time.

Usually a temperature of 100.4°F (38°C) Or higher means you have a fever caused by an infection or illness.