Braxton Hicks or just Cramps?

I can’t tell if I’m having Braxton Hicks contractions. Baby girl moves so much and it cause my stomach to tense. But then some days I get cramps and she moves so I can’t tell if my stomach is hard because of the baby moving or if its a contraction. Annnd I never really feel like the contractions (if that’s what they are) come and go. It’s just a dull pain/ache that goes away after a few minutes. Opinions?