Really confused .....

Ladies this might seem like a crazy question but i have learned so much from you all throughout my pregnancy I value all the feedback I get back. Soooooo here's the thing that I'm so worried about, since i would say NOVEMEBER around thanksgiving I've had a bump that clearly feels like her head on the top of my STOMACHE. You can feel the bump, my STOMACHE is like come shaped E ought though my gyn says it's not but I feel like it is, with my son I had a round bump. Soooooo anyway this bump hasn't moved at alllllllll I'm 30weeks today each visit my gyn does an ultrasound just because he likes to see baby every visit, so he has always said she's breech. I ask him what's the bump he says head. Okay fine but how is it she has not moved since November if that makes sense as in position???? My thing is , is she stuck?????? This lump never shifts at all, y? Yet he says I have sooo much fluid baby moves all the time. Then why is this same lump still CONING out?