I had unprotected intercourse on 3rd day when my cycle ended. I have 28 days cycle. So on may9th to 13th I had my period and on 16th intercourse happened and I took unwanted72 next day (within 72 hours)and done a test on 20th may it come out negative. After some days on 24th may I experienced withdrawal bleeding later lasted for 3 to 4 days. My next period date was this month (6th june)which did not came.After that I again took a test on 11 june it came out negative and then again took test on 20june it was also negative.so when should i expect my periods to come?