Late onset nodules and large masses on cheeks/chin after Radiesse on neck - opinions?

Hello, I had Radiesse dilute done on my neck in Germany beginning of August, followed by a dentist appointment a week or so later. By September Nodules appeared at the injection sites. More noticeable however, my cheeks doubled in size with hard masses of clumped nodules. At firstI thought it was my cheekbone because of its hardness, yet it also resembled edema. 2 days later 6 distinct nodules on my chin developed. Prednisone, saline solutions helped temp. Now doxycycline & clarithromycin.