Implantation bleeding

Almerinda

How many days before period does implantation bleeding occur?

My period is supposed to come June 2nd but I saw something today. Super light spotting

I’m thinking it might be soon. Last time this happened it was day 16 or 17 I had implantation bleeding I did end up having a miscarriage three months later in March so I’m hoping i might be pregnant again but it’s the waiting game now.