Ugh! I'm so sorry you experienced flares both coming and going, ! I know that some of our members have shared that flares can be triggered by situations that the body perceives as stressful, like getting vaccinations or traveling. Here's an article one of our members wrote about what her personal triggers are -- https://lupus.net/living/triggers-flares. I thought you might find it relatable. Most of your symptoms sounds like pretty typical flare symptoms, except for coughing and sinus issues. I'm not saying they can't be Lupus symptoms, but is it possible being in a Lupus flare left you susceptible to catching a cold as well?
I hope you're feeling better by now!
Best, Erin, Lupus.net Team Member.