I am newer here as well and I can attest to the fact that all are welcome. I was recently diagnosed with Lupus a little over a month ago. During my first visit with my Rheumatologist he diagnosed me with UCTD. It can be a frustrating diagnosis (it was for me at least, I like to know what's going on because I'm a planner). Fortunately there are a lot of treatments that are appropriate for all autoimmune disorders in general. I am on Plaquenil and I don't think it's anything to be concerned about. There are very few side effects. Most people report having some GI issues within the first weeks of starting it (I have them all the time so I couldn't tell haa), but other than that just make sure to have an eye exam with a specialist so that you can monitor the one side effect of retina detachment (which usually happens after years of taking Plaquenil and can be easily prevented by being proactive).
I welcome you and I hope that you feel lots of support here.
Lupus, Secondary Raynaud's Phenomenon, Pernio (Chilblains)