Braxton Hicks?

So I had one contraction while at my dr and she was able to confirm what was happening. Feels nothing at all like I thought it would!

Lately I’ve woken up with a somewhat sharp pain on the left side of my tummy that goes away in far less than a minute. It feels different than the confirmed contraction did. Is it possible that’s a contraction? It’s definitely not round ligament pain, a full bladder, or anything else I can think of.