my period had been regular every since i have had my period. it either comes one day before or on time, but this time after my period on march 3rd i had intercourse a lot during the time i was suppose to ovulate, then whenit came time for my period to come it didnt. it didnt come the day before nor the day of which was suppose to come march 31st. i then started to bleed april 2nd but it was only enough to use a pantyliner then on the 3rd i only had to use one tampon, then on the 4th i was back at pantyliners because it was only dripping.i have never a period like this, or is this my period or just late implantation