Lynnwood and Hippimom both covered everything you should know, but I wanted to add another welcome.
Try to pace yourself, taking rests between activities (and EVERYTHING is considered an activity - like taking a shower) - this helps you avoid some of the worst of the symptoms. As you adjust to the meds, you should start feeling better.
Good Luck and Welcome!
Dx: Lupus, sjogren's, celiac, severe allergies.
Daily Meds: Plaquenil, Zyrtec. Aciphex, Nasacort, Prozac, Ambien CR, CellCept
Daily Supplements: Calcium, B-100 Complex, Daily Vitamins.
As Needed Meds: Epinephrine, Benadryl, Proventil, Xopenex, Tylenal, Darvocet, Prednisone.