Is This Normal Swelling After Sculptra or Should I Be Worried?

That swelling looks much worse than normal, you should go back to see your doctor asap to ensure it is not a hematoma.  Although some swelling and bruising is normal, you should follow up with your physician if you are concerned.
 

Swelling and bruising after Sculptra can definitely occur, just as with any other facial injectable product. One thing that is unique about Sculptra is that large volumes of fluid are used, and this can cause more edema than would occur with other types of fillers. 
Bruising and edema in the face tends to drift inferiorly (toward the feet), so the bruises may tend to congregate near the lower part of the face. That being said, any concerns after injectable treatments should be discussed with your injector, and I always recommend seeing an expert physician injector.
All the best,

While bruising is a known side effect, the size of the bruise and associated swelling needs close follow up.  Please contact your injector / doctor asap.  Avoid any medication or supplement that can thin your blood.  If this increases in size, infection may need to be ruled out.
Best wishes,
Dr B