Hard belly??

Shannon

So I am 27 weeks and sometimes my belly feels really hard and sometimes it feels really soft. I was just walking around a bit ago and it was super hard. Now I’m laying down and it is super soft. Is this normal?!! This happens frequently throughout the day. I remember my doctor telling me to come in if I had a board like abdomen. Sorry first time mom and super paranoid about everything! Just want a happy healthy baby!