Braxton Hicks vs Contractions

Stacie • Mother to Ben 👦🏽, Bash 👦🏽, and Braxton 👶🏽, 420 enthusiast 🔥💨, lover of life 😍🤘🏾
Hi. I'm only 22 weeks and I want to be ready for when I start having contractions/BH in the next few months... What do BH feel like? How do you know whether it's BH or an actual contraction? 
In the morning, my belly does tighten and harden but I always assume it's Bentley moving around in there... Am I right?
I just want to be prepared.