How do you deal with hunger during second trimester ?

ana

I’m officially 21 weeks pregnant & i have noticed a huge increase in my appetite I’m not on any sort of diet i pretty much eat as a regular person would but lately i cant sleep i wake up to pee atleast 3 times at night then i feel hungry as if i didn’t eat dinner before going to bed 😩 is it best to eat when hungry or weigh it out til the morning? I don’t want to get overweight or be unhealthy either .