Hello , my periods suppose to come June 12 but yesturday morning it came & it was really light & had barely any cramps at all ? I was drinking all Saturday with my boyfriend & I don't know maybe that could have effected it I don't know . Someone help me please

& this morning I started to bleed a little bit more with a couple black clots

This all sounds within the normal range of any woman's menstrual cycle to me.
There's just no way to tell you more than that online.
If by 'what is this' you mean are you pregnant, we can't possibly know. I would guess that you are not.