Am I hungry or is it cravings?

Sometimes I cannot tell whether I’m hungry or I’m just craving something to eat. I’m a fairly smallish person (36F, 126 lbs, 5’7), so I’m wondering if these are signs that my body truly needs more.

I eat a fairly balanced diet. Breakfast contains proteins and healthy carb, lunch is usually a large portion of veggies, healthy carb and protein, dinner is similar to lunch but larger protein and carb. And in between I snack plenty. I do two hiit and two hot yoga workouts per week.

But sometimes I feel ravenous. Like I want to eat a second meal because I’m starving again just an hour later. Like my snacks never suffice.

Do I indulge in this hunger? Or do I practice self discipline and not give in? Anyone face a similar scenario?