Contact your injector and discuss treatment options. Bruising can last approx. 2 weeks. You may want to consider a hyaluonidase injection to dissolve the product. If the product is injected too close to the dermis you will see the product as a blue tinge called the Tyndall effect.
Unfortunately, restylane like any filler can migrate slightly and you may have more in one area than another. I would suggest warm compresses to help with the discoloration and/or bruising. I also recommend to my patients to massage the areas and see if they can manually smooth out any lumpiness. Lastly, small amounts of hyaluronidase can be placed to dissolve out the restylane if time is an issue.
You could be having a Tyndall effect from the Restylane tear trough injections. I prefer Belotero Balance HA filler for tear troughs. I usually do in 2 separate sessions 10 days apart just so I do not over treat. Now the Restylane will dissolve in a few months or you can have Hyaluronidase injected, but costs $700.
Injecting in this area is tricky as I'm sure you know. Have you checked with your surgeon to see what he thinks? I have seen bruising and swelling from tear trough injection last for weeks. Check back with your PS....