I had sex night before iud removal i checked my calender it says i was fertile the day of removal drank plan b two days later what are the chances?

Unlikely pregnant: Although iuds are not effective once they are removed, the Mirena (levonorgestrel) iud may have a little bit of a lingering effect because of the hormonal component it includes. You took the Plan B within the appropriate window so you should be covered. Sounds like you might benefit from a reliable form of contraception now that the iud is gone.