Bio Alcamid Filler?

I had bio-alcamid injected into my nose for sculpting. I am healthy with no medical problems. I was too scared to get a nose job, so the consultant recommended me this filler. I got this filler injected on the 28december 2012' so is very recent. I had one syringe. She told me it is safe and many patients get this and so far no complications, now I go online and read about the horror stories, this had me very concerned! She told me the filler will last approx 3-5 years? I am a bit scared now.