Ughhhhh breech again?!

Chelsea

My baby was breech my last couple appointments right up til I was about 37 weeks, then he flipped and they told me at my last ultrasound last week. Today I can feel his head above my belly button again, I'm almost positive that's what I'm feeling.. I am so bummed out :( why would he flip again? I'm almost 38 weeks. I was so excited when I found out he wasn't breech, now I'm back to square one and it's getting late....