Age 20, girl, 115lbs, 5'0, Stylage filler bump won’t go away, could this be a bigger issue?

I’m a 20 year old girl, 115 lbs, 5’0. I’ve been getting NSNJs from the same nurse for years, recently I went to refill and noticed a filler lump form afterwards, getting progressively more visible with the days. I’ve gone back to her for multiple dissolving sessions but it seems to still be there, even if slightly less prominent. She used stylage L to fill . I’m starting to get worried that this is a bigger issue since it hasn’t gone away after multiple dissolves. She hasn’t massaged it at all.