I'm 38+5 and was laying on my back this morning (only for a few minutes as I was trying to get rid of cramp in my leg!) when I had a massive Braxton Hicks.
I felt my tummy and it was rock solid but had collapsed if that makes sense? From the belly button down to my pubic bone there was no bump - it was flat. The bump was still there at the top and side. All is back to normal now. Baby is very quiet though. Does anyone know if this is normal or if I should be panicking??? Thank you!