Braxton hicks?

Brianna

I just had a really weird cramp that came out of nowhere and lasted maybe 15-25 seconds and then went away. I am 19 weeks. I didn't ever have Braxton hicks with my first so I have no idea what they are like. I read that they can start around 20 weeks or earlier if you have had a previous pregnancy. I see my dr soon so I will talk to her I just wanted to see if anyone has any input.