I was due for my period May 2, may 3 i spotted for two days not normal with no cramps . My periods normally heavy going through thick pads this wasnt the case i wore the thin regular ones. I bled lightly with nickel sized little clots until may 9. Well, I had sex multiple times may 1, may 6, may 10, may 12, may 13, may 15, may 16. Now its may 18 and yesterday i had my normal period cramps and brown in my pad and light blood when i wipe today as well. However im not due for a period again til june 3, could this be implantation or ovulation or what???