On 17 sep I had unprotected sex and on the next morning I had taken ipill, then I have tested prega test 2 times but it is negative and also blood test but it is negative too then one of Dr. Recommend me meprate for 5 days ,on the 5 days complete of this tablet I had seen some red blood but it is very light and lasts for 2 days only, I had started taking meprate and got period on 20 and after 10 days I again saw some spotting for 3 days what should I do now, is it something to worry? And also sometimes I may got irregular periods, pls commend on this ,is something serious or? Also I often get my periods cycle in between 20 to 30 in every month!