Can right sided facial twitching (next to mouth only) be a side effect of tear trough Belotero injections ?

I had Belotero injections in my tear trough 5 days ago, and the results thus far are astounding! I went to a renowned Beverly Hills oculoplastic surgeon, and am very pleased with the results already. I have a bruise under my left eye which is fading, and some swelling in the upper lids which is subsiding daily (we did upper and lower lids). Yesterday I began w/ right sided twitching next to mouth, esp. when drinking or eating - could this be nerve related? Is this a possible side effect?