Why have my lip fillers gone rock hard since I had antibiotics treatment and why won't they now dissolve? (photos)

Recently been in hospital had intravenous antibiotics, I noticed my teosyal kiss lip fillers I'd had about two months before (that healed completely normal and felt fine) started to swell and become rock hard and lumpy and look uneven. Been having them disolved had 3 doses of dissolver hard fillers my lips feel softer but there is no sign of them dissolving and I only had 1ml of filler. I'm extremely stressed about this and feel like I am now going to be like this permanently.

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