Rash 7 days after retrieval

J

So I originally thought I got a rash on my chest and up the side of my face by my temples from PIO. Well I did a retrieval with the intentions of freezing and then moving to a mock cycle. Well I had retrieval last Sunday and yesterday I started noticing the rash was coming back but I'm not currently taking any medication for IVF. Has anyone else experience this? The rash always comes about 7 days after retrieval.