miscarried or af??

my period is not due til the 9th of june and my period is always regular, i had been having a couple symptoms and really thought i was going to get my positive this month. but last night i started having terrible cramps and pain on lower stomach there was some brown spotting but today it has gradually turned to bright red....not sure if its just my period...

update i only bled that day monday was very light then only some spotting tuesday have not bled since then...