I don't think i would really worry.My uterus tends to grow to one side for awhile.Then as i get bigger it evens out.Apparently sometimes it just happens.If you are on the thin side it could make sense why you can feel the babe so well.It just doesn't sound like a bad thing.Also your uterus just might be irritable as far as being palpitated.I already get plenty of BH's.I would drink lots of fluid and rest.don't keep that warm pack on your belly too long!