Took ipill on 28 th dec , my period cycle was from 22 dec to 25 dec , on 18 th jan [ after 20 days of taking ipll ] I had bleeding which was light not heavier in flow , but colour was like as of periods , without cramp and pain that continued for 3,4 days ...today is 24 th January and I have still not got my periods What was that bleeding , if withdrawal then how after 20 days , if not then what was it And when I can expect my periods Is there any risk of pregnancy???