I Started Taking A Fat Burner And Probiotic Pill March

I started taking a fat burner and probiotic pill March 13th and a couple days later I started getting blistery spots only on my left side. Four on and below my left breast, one on my calf (top) and one on heel of left foot. Is this a side effect from those pills or just coincidence? Weird that they are only on Left side. Thanks, Jennifer