Braxton Hicks Contractions

Hello ladies. 27 weeks tomorrow (due 1.3.18)

I have been having random contractions the past couple of weeks. They aren’t especially painful or regular but it does freak me out. I went in two weeks ago and they checked my cervix and it was closed. They also did a fetal fibronectin test for premature labor prediction and thankfully it came back negative. I had some yesterday and this morning so I am going back into the doctor today. Anyone else having them already or in previous pregnancies? I am also staying super hydrated so I know it isn’t because of dehydration.