Yes, stress can play a major role in causing new symptoms as well as worsening of old symptoms and throwing us into a major flare. When my daughter was ill and shortly before she passed, my doctors realized that I was under tremendous stress and took aggressive action (with reference to medication, referring me to a therapist, giving me off-work orders etc.) to help to curtail the detrimental results of stress. I tell you this to say that it might be helpful for you to let your doctor know about the amount of stress that you are under, tell him about your new symptoms and the worsening of your old symptoms. If he is a doctor who understands the correlation between stress and Lupus flares, he should immediately start to make changes in your medications, prescribe new medications and even write you a referral for therapy/counseling to help you through this very trying time.
During my therapy after the loss of my daughter, I learned that the stress caused by the loss of a marriage is equal to the stress caused by the loss of a loved one and is exponentially doubled for each child involved. So, I know that you are under a terrible amount of stress and you cannot handle all of this new stress and these new symptoms by yourself. Do not be afraid to ask for help from your doctors!
I will keep you in my prayers and hope that you are able to get some relief and some help!
Peace and Blessings
Look For The Good and Praise It!