Sayang, this is really something you need to clarify with your doctor or pharmacist asap, especially since you've just taken emergency contraception. Different pills have different timing, and mixing them up boleh jadi risky for your health and how they work. Don't risk it lah. Call your GP or the pharmacy counter at your nearest clinic or hospital, they can give you the exact timeline for when it's safe to restart Regividon, based on your specific situation. Better to get it right from the source, kan? Your pharmacist can answer this in 5 minutes and you'll have peace of mind. Take care of yourself!