Im 16 and sexually active with my boyfriend i have recently gotten my first depo vera shot and we hardly ever use condoms now because its only a .1% chance of pregnancy. i expected my period late so i wasn t worried about it, it was about 14 days late and it stared with very light spotting and then the next day still hardly there, then i woke up the next morning with the worst cramps ive ever experienced and almost threw up and my flow was then heavy. later that day i went to the bathroom and there was whitish thick, flesh-like, inch wide clumps on my pad. that was only the 3rd day of my period and im now done which isnt normal for me. i was worried and looked it up but im still concerned and confused on what it might be, any ideas?