I broke out in hives in reaction to taking Plan B (I think) five days ago on my neck, back and upper torso. My face swelled up and over the past five days the swelling and redness have gone away but the itchiness has spread down my stomach and shoulders and has reached my thighs. It now looks like a faint sunburn on my stomach, back and legs, and I think it's clearing up but I'm not sure why it's still moving, or if this is a normal reaction.