Nuva ring🤷🏼‍♀️

Anyone familiar with this bc? I used it several years ago but getting back on it. I'm suppose to take it continuously, so no period but Doctor wanted me to have one normal period first before I start. My question is when should I insert the first one? I thought it was suppose to be right after my period but when I look online it says day 2-5 of period!?? Confused. Any advice will help.