My 14 month old daughter is having major tantrums??

ignore her... i know you are concerned with her hurting herself, but the best thing to do is ignore... the more times your ignore her when she begins to tantrum them she will start to realize that the tantrums get no attention from mommy... my son started this around 11 months old.. the whole nine yards ,throwing himself down kicking ,screaming, i would literally walk out of the room, when i did that the tantrum was short lived .. he would get up as calm as could be and find me in the other room.. i would then ask him ,are you done?.. he is now 19 months and barely ever throws tantrums anymore.. and it will get easier once they have words to use.. you just need to be consistent.