Full then hungry what is happening?!

So im 28 weeks pregnant and when i eat i get full so fast but still eat a good amount. Then an hour later im starving, belly will be rumbling and ill eat a snack and even as I've ate that snack or food i still feel hungry and my bellys rumbling?!? Wtf is this like anyone else?? Heres my example of what just happened now

Ate a dinner with veg at 530 ish, ate it all and felt so full but still ate it

Now at 730 my belly is rumbling and i feel so hungry again im getting hunger pains, so i ate some biscuits and even as im eating my belly is making hunger noises. I ate like 5 and it didnt do anything??

Help plz 😫😫😭😂