I was prescribed NuvaRing on Sept 20th and put it in same day around 12pm. I just had unprotected sex with ejaculation inside last night on thursday sept 28th at approx. 1am. i had it in for the 7 days and now i'm scared I might become pregnant because I am afraid we did not wait long enough. Does anyone know if I could become pregnant or when the NuvaRing becomes effective? I've read online to wait 7 days and we did but we cut it very close. basically on the 7th day is when I had unprotected sex. Also is it unsafe to take planB while on NuvaRing?