10+4 and concerned that my tummy is still squishy?

I'm more than likely worrying for no reason, but . . I can hear my baby perfectly on my Doppler, just above my hairline either central or to the right as I look down, but when I'm lying down my tummy goes almost dead flat and it's super squishy still!? Shouldn't it be firming up if I'm hearing my baby in a certain location every day for the last week? I'm worried s/he's not protected. 😕 When I stand up I look all sorts of bloated and my tummy and lower abdamon/ pelvic area is quite hard, but lying down its a different matter . . Anyone else similar to me?