DD is now 4 months and has shown no sign whatsoever of trying to roll from back to front or front to back. At the beginning the whole 'tummy time' thing was a nightmare as she hated being on her front and would scream the place down. Now she is getting more comfortable on her front but still doesn't like being there for more than a few minutes.
I see some babies kicking around happy as anything on their fronts and flipping all over the place. Is it normal for her to have shown no interest in rolling?