I HAVE BEEN ON MARVELON (BIRTH CONTROL) FOR ABOUT 4 MONTHS NOW AND BEFORE THIS I WAS ON TRI CYCLEN LO FOR ABOUT 8 MONTHS AND I WANTED TO START TAKING ZANTREX 3 THE DIET PILL TOHELP ME LOSE WEIGHT WHILE IM WORKING OUT. MY QUESTION IS......DOES TAKING THE ZANTREX 3 AFFECT MY BIRTH CONTROL????