I've Been On Sulfasalazine For 3 Months And My Skin

I've been on Sulfasalazine for 3 months and my skin seems blotchy purplish in colour. My feet around the toes seem dark red and purplish in colour. No pain though but skin seems itchy with red spots here and there appearing. I see my Rheumatologist in 2 weeks. I take 2 pills in the morning and 2 at bedtime.