What Causes Blister-like Marks On Torso While Intermittently Taking Birth Control Pills?

I believe I messed up my birth control pill routine quite significantly over the past couple of months. I m at the point where I m on the placebo of the pack that I think was the 2nd one I messed up on. My gyno says she d like me to let her know if upon starting this next fresh pack and getting back on track i m still noticing spotting, etc. My question is this: Within this period of time, I ve also had small, blister-like marks on my torso (back/stomach, chest, upper arms). Some look like that, and others are spots of blotchy/raised skin. I saw a PA and they gave me a antifungal with steroids for any potential allergic reactions or fungus. It s not working so much...they may go away, but new marks keep popping up. I m wondering if this may have anything to do with the wonky birth control routine per chance?