Braxton Hicks?

So I’m experiencing a tightening of my whole belly, to the point I’m out of breathe and it’s really uncomfortable. Is this Braxton Hicks? It’s my whole tummy and I feel like I have to breathe through it but it’s not going away. I’ve drank lots of water and laid down ... but I have a toddler and can’t lay down for very long.

There’s no period cramps or anything just severe tightening like I’m gonna burst....