Sounds like it's time to find another rheumy.

Your doctor is saying you have RA, it's just seronegative. And RA is all about inflammation. You should talk to your rheumy about other drugs that might be helpful, including biologics. The whole idea is to slow down the damage the disease can do. Are you concerned that your doctor is not taking your condition seriously? If so, talk to him/her frankly about your concerns. Get another opinion or find a better fit. It is very important to have a good relationship with your rheumy. You're in it for the long haul.

Plaquenil will make you extremely tired. All I did was sleep and get infections while I was on it. Not to mention runny bowel movements too.

I've been diagnosed with a inconclusive connective tissue disease! What the heck is that! Seems like there not sure what exactly is going on with me and whether this is why I'm having so much trouble with my lungs! It's hard cuz you have to trust the doctors 😬

http://www.arthritistypes.org/seronegative_arth...
This will give you an answer you are not getting from your DR
I hope you can understand the differences in your diagnosis. HUGS to YOU!