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Basically you had unprotected sex on 8th day of the cycle. This is usually a safe day of a normal 28 days cycle. They are unsafe days if you have a very short cycle with period every 21-24 days. Hence chances are very less that you are pregnant if you have a cycle of 26 days and above (you have a cycle of 32 days so you could hardly get pregnant by unprotected sex on 8th day).

Also if you took Postinor2 within 72 hours, you can be doubly sure you are not pregnant. The bleeding you had from 23rd should be taken either as withdrawal bleeding or as a normal period. Both are possible as the emergency pills cause hormonal changes.

Hence you may not now get a period when you originally expected it. Even though chances of pregnancy are very less, take a pregnancy test and see on the day you originally expected the period. In all probability it will be negative. If it is positive consult a gynecologist. Hope this helps. Take care!