Bleeding for over 3 months

Louise

So ive been havinga heavy period for over three months, the Dr put me on the mini pill to try and stop my periods or make them lighter, im nearly at the end of my first pack and its made no difference, still bleeding everyday, passing clots and have period pains. I phonedthe Dr yesterday and she is giving me some medication to take along side the pill to try and stop it but also booked me in for an urgent scan of my womb, worried something is wrong, has anyone experienced anything like this ?