the last week of june i quit taking my birth control bc i didnt like the way it was making me feel. according to my mom, i got my period the 2nd week of july but i don’t remember. and ive had cramping and spotting in between july to now, and ive taken 3 pregnancy tests and they all came back negative. i just started back up on my birth control and ive been on it for 3 days now. why haven’t i gotten my period yet??