Is it normal for lips to be tender a month after lip injections?

I got my lips filled with Teosyal for lips. There was minor swelling & bruising like I've had before, but this time, my lips are VERY sore & tender A MONTH after! Is this normal to be so tender a month after? Could something be wrong? If so, what could it be specifically? I contacted my injector & told her about the issue & she just told me to let her know if it gets worse (more sore).... which it isn't. Just consistently tender.