Very very confused. Someone help!

Hello ladies so this is my first pregnancy and before I fell pregnant I was a curvy lady. My 'bump' has started to take shape a lot more but it's still not hard? Also I when I lie down it kinda goes away. And there is no bump. I'm 13w 5days and I know everyone is different but does a proper baby bump feel solid and does it stay in shape when lying on back?