I had silicone injections about 2 months ago and now I have discoloration around my buttocks. What to do?

Buttock Augmentation with Silicone is never a good idea.  It frequently results in problems such as skin discoloration but eventually, and much worse, severe hardening of the buttock.  I would recommend seeking immediate follow up with your original sugeon as well as a second opinion.  Best of luck...RAS 

Our office is the leading center for the removal of foreign body fillers in the United States. My approach is protocol based, beginning with an examination to determine the grade of inflammation using the Karamanoukian Grading Scale for Soft Tissue Inflammation. Silicone biopolymers and PMMA can be safely removed from the face and body. Longterm complications are minimized with diligent attention to detail and protocol-based treatment. 
Best, 
Dr. Karamanoukian
Realself100 Surgeon

The 'Silicone' injections many patients claim to have had are frequently not even Silicone, or at least medical grade silicone. Unscrupulous practitioners and 'lay' practitioners are injecting tire sealant, silicone putty and some other toxic industrial products to pump up buttocks. Other times the 'silicone' is actually a substance approved outside of the U.S. but one which as its own complication profile.  The attraction of these approaches is convenience and cost. The downside is unlicensed and untrained individuals injecting non-regulated and illegal substances in your body to make a quick buck. It would be great if there was a safe, predictable, easily injected product product for buttock augmentation. However, right now this is a risky enterprise. Fat grafting and buttock implants are still your best bet, despite the increased cost and downtime. As for the pigmentation, it could be pigment from bleeding or it could be hyper pigmentation just from the trauma of the needle sticks, In these instances it should improve with time. Best of Luck Dr Harrell