Swelling at injection site 1 month after Belotero normal? (photos)

It has been about a month since I got Belotero injected, and suddenly it seems like the injection site on the right side of my lower lip is swollen. It doesn't hurt or itchy, just has progressively gotten more swollen over today. Any ideas on whats going on? I am currently sick, going to the doctor tomorrow, seems like I have tonsillitis and may get antibiotics. Could my injection site be acting up because my immune system is compromised?

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