Original sentence: If pills are missed or the ring or patch used incorrectly, the chance of pregnancy is increased.Medications used in the treatment of epilepsy can interact with the combined pill, patch or vaginal ring, resulting in both pregnancy and shift in seizure threshold
Edited sentence: If pills are missed or the ring or patch used incorrectly, the risk of pregnancy is increased.Medications used in the treatment of epilepsy can interact with the combined pill, patch or vaginal ring, resulting in both unplanned pregnancy and/or shift in seizure threshold