Why would Botox cause bumps that exude puss or a white liquid at injection sites? Have I overdone Botox?

I've never had acne, now age 48 & have puss coming out of Botox injection sites continuous now 3 months after procedure. I've received Botox for over 10 years on the forehead twice annually & this is first time experiencing this. It's absolutely at injection sites. Someone needs to study this please.