its my first time using the nuva ring and i wasn't sure when I was supposed to put in the ring. I looked online and a couple people said on the first day of my period and others said 7 days after my period. My periods are usually very irregular and are never on the same day each month. They usually only last 3 days i wasn't sure when to put the ring in and I'm on day two of my period should i put in the ring now?