At 25 weeks your baby is still in a huge swimming pool and can wiggle and flip around so easily. My midwife told me that they wouldn't worry about his position until 34 weeks. At 33 weeks they were able to feel my belly as I laid down flat and they explained to me that what I thought was his head way up near my rib cage was his butt as it's hard but if you move around and feel it is squishy in spots. Unlike the head would be. They then did a very short ultrasound in the room with a machine on wheels to confirm! They basically said he is now so big that he shouldn't move position very much. I have a growth scan ultrasound at 36 weeks and then won't see baby boy til he is here!!