So i have not gotten my period this month i missed it so far... i was due on august 8th and i had to accidents the week before i took plan B.... so im kinda worried.. but also my period has been nuts like im not regular anymore and i didnt get it for 6months at one point... well i took a pregnancy test it was negative.... should i worry? Ive been cramping... very bloaded but no period or spotting HELP!!!