I experience my 1st braxton hicks contractions last night when i left work omgggg i was freaking out…

I experience my 1st braxton hicks contractions last night when i left work omgggg i was freaking out cause i never experience it with my other kids at 21 weeks but i read its normal and i drank water and it went away whew that was a scare lol and i experience it again while dropping off my daughter at school