I had unprotected sex with my boyfriend on 26th of feb just after the day my periods got over.. but within 48hrs i took an ipill in order to avoid any risk. Just after 10days that is on 6th march i had blood flow for 2 days. So i ws expecting my periods on 6th april ds month. But already 2 days have past and i didn't gt my periods. So plz can you help if der can be any problem.