I feel like mine is really low too...
Practically all of my movements have been below the knicker line, like still down really low, I think the highest I have ever felt a movement is just below my belly button.
Im finding that as my bump is so low, under the bump maternity trousers dont fit that great, coz the band just kinda folds down, rather than fits under my bump, as they are fitting around my bump instead!
Ive put it down to having a girl, but your having a boy, arent you? So bang goes that theory!
x