PLEASE HELP Why does this keep happening to me??? Women only.?

Okay..Im 13 years of age and I'am taking birth control pills so my periods won't be so painfull...Im gone out of my first pack , But I am now on the second pack on darker color pills , NOT the darkest color pills. I have been missing some day ( like only 2. ) and I do be late sometimes when taking the pills. But for some strange reason , I had 2 periods last month and before I got my second period , I started spotting EVERYDAY. And it was BAD spotting. It has been 9 days of my second period ( I only have 5 to 7 days of a period. ) And at this very moment , I am spotting terribly and it keeps happening to me. My mom tells me to keep taking the pills...But this has NEVER done this to me before. Im susposed to take my pill at this very minute. Should I still take my pills , or Stop taking my pills and go see a doctor? This is soooooo annoying and I really want it to stop..Stop...NOW.