Earliest you felt Braxton Hicks?

Megan
Comments with your person description of what they felt like are much appreciated! I'm 19 weeks today, I'm a preschool teacher and was outside with the kids. I wasn't lifting much or anything but maybe the heat got the best of me (I live in Florida)
It just felt like my uterus area was tightening, not too noticeable but more just uncomfortable. I feel a bit better now that I'm sitting down in A/C and relaxing. Thank you advance for your votes & comments!
And yes, talked to my OB, he says many women experience this in the 2nd trimester. 

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