Discoloration after PMMA - how I can get it fixed? (photo)

I gotten second round of pmma in June. I just started using a tanning bed (4 session) now I can see on the one side I have discolouration showing near injection area and a another spot lower. I only have it on the one side. Can a doctor please let me know why and how I can get it fixed? I have recently done an ultra sound on my hips to check if I had any inflammation and it came back negative.