Welcome to our forum. It sounds like the others have offered you some good advice. I've had lupus for 20 years and over those 20 years my ANA has been positive and then negative. My complements have been positive and negative, my ch50 is always positive, my Sed rate is always positive, and my CRP is always positive.
My Rheumy has gone around and around whether I have Lupus, UCTD, MCTD, or something totally unknown. The fact though is that he treats me like I've got lupus. He knows I'm got an inflammatory problem and doesn't let it go untreated.
I would highly recommend you find a different doctor and if it takes several tries, so be it. You're not crazy and this isn't all in your head. Something is going on in your body and you need to find out what it is. I wish you will in your quest to figure out things. I'll say a prayer for you and send you lots of positive vibes.
Wishing you well,
dx fibro, SLE, glaucoma, cateracts, bells palsy, depression, migraine headaches, gastreopaersis, chronic anemia, RA,MDS (Blood Cancer). Tons of meds.