So I started Nuvaring last month and I've had unprotected sex before my seven days were up and had unprotected sex again last week with same person of course and Friday was the day my period was suppose to come and I changed my Nuvaring Saturday but now my period is 7 days late and yesterday I just started getting sick out of no where. I was eating pizza and then I just felt sick so I just want to know if it's because I left my Nuvaring in for 4 weeks instead of 3 or I'm pregnant.