I missed three pills in my last week of active pills, made them up over the next few days when i realised, then had my week on non active pills but started my next pack of pills three days late. Was meant to start active pills on a Saturday, but started on tues and made them up by taking one morning and evening until I had caught back up. Have had sex regularly throughout the month. My period (withdrawal bleed) is due on tuesday. What are my chances of being pregnant? Been nauseated for the past five days.