3 mc in a row

Caila • Expecting baby #3...💙carter liam!! This is my 8th pregnancy.. We have 2 dd they are 10 and 2 the rest of my babies are angels!!
Has anyone else had multiple mc and the doctor still say ur health and ur fine?? I feel like something has to be wrong! I had a baby in feb 2009 (healthy) ... Lost one August 2010 triplets on sept 2014 and June 2015 .... Doctor says it just happens??????????