Is This Braxton Hicks?

Hi ladies,

I’m a FTM and 28.5 weeks along, so I have no idea what I may be feeling - For the first time, I was experiencing a LOT of tightness and discomfort that honestly felt as though it lasted for a half hour to an hour, and I also felt totally exhausted and had a difficult time getting into a comfortable position to let it pass. Now, I feel okay again for the last half hour, and all seems normal. Is this Braxton Hicks? Or more likely indigestion/round ligament pain due to it feeling somewhat continuous?