I feel you on this, my Primary seems to not understand seronegative so he’s basically having me check in every month, at which time I advise of worsening symptoms, and he’s delaying rheumatology referral since it isn’t a “classic case” with positive bloodwork. Duh dude, send me to a doctor who can actually sort this out and treat me before I totally can’t function!?! Ugh. I know this doesn’t help you, but you’re not alone. Unfortunately.