Ok. I'm on ortho tri cyclin but around the 17th day or so I accidently took my pill about 6 hours late. I still took it that day then the next day I took it at the regular time. 3 days later I had sex with a condom but it broke and I was worried so I took plan b 48 hours later. That night we had unprotected sex. Those were the only 2 instances we had this month, and now my period is 3 days late. I dont know if maybe the plan b made it late? Or because I got a gym membership and i've been exercising more the last 2 weeks? Or if i'm just stressing way too much over it? Any feedback would be greatly appreciated.