it took a while to figure out exactly how many pills the doctor needed to give me...finally we found that 12 days of progestrone and my period would start the next day..if I took just 10 pills it would take 2 weeks to get here..so the doctor said that we have found my perfect dose.
Normally if you just finished the progesterone, it could take up to a week for your cycle to kick in, it will not be immediate. I thought the same thing when they did that with me, as I have always had irregular cycles & PCOS. Just be patient, it will kick in. If you finished Tuesday, you may start this weekend or early next week. Best wishes !