I inserted the nuva ring and left it in for 4 weeks because my doctor told me that if I did that I wouldn't have a period so 4 weeks later I instered another I then started to spot which I read was normal. So I decided if I was gonna spot the whole time I would remove when 3 weeks was up have. Period and return another after a week I'm concerned because I have sex two days before I removed it and I only bleed for maybe 2 days and now I'm just spotting again I'm instering a new one tomorrow so how long should i wait to be protected since Ive been on nuva ring for 2 months?