23 weeks ...achey tummy ?

Now this may sound really silly hahah but just curious and wondering if normal as this is my first,im 23 weeks and today under my tummy it feels so achey and heavy,i have to be hateful when I sneeze as I feel like im going to pull something 😅 I had a slight bit of chub on my tummy to start with so I don't know if this is because it hangs more ???? Is it just the biddy chnageing?.