Want to stop nuvaring but don’t want to get pregnant

Patient: I started my second month of nuvaring January 1st after switching from Microgestin. I took the nuvaring out today because all of the negative reports on it were giving me really bad anxiety that I was developing a blood clot in my leg. The last time I had intercourse was was on Saturday January 4th. If I stopped my nuvaring today, began my Microgestin to tonight and use protection for the next week will I be protected against pregnancy?Also what are the signs of a leg blood clot?Thanks!