So I am on Ortho Tri Cyclin Lo and I had sex the 11th 12th 13th and 14th day of my cycle and was ejaculated in approximately 8 times by my fiance during those days (sorry for so much detail). I took my pill 4hours late on the 13th day and missed my pills on the 15th 16th and 17th day of my cycle. I have not doubled up because I accidentally dropped 2 down the sink... Im am on my 18th day of my cycle now and cant get a new pack till about 2days from now so I decided to just still take my pills left over as normal but that still means I've missed 3 active pills of week #2 in my pack.... If I don't experience withdrawal bleeding in the next few days does that mean I am pregnant? and If I do have withdrawal bleeding is there still a chance of me being pregnant?.... Either way what is my chance of being pregnant?