Braxton Hicks

Meredith
Hi, I'm 25 wks...I'm not sure if I'm having Braxton hicks or real contractions, they started off coming here and there over the past few
Days, now they are becoming more and more frequent. My belly gets really tight and the pain isn't too bad...but they are happening more than a couple times An hour. I have an appointment today luckily. But they are like period cramps and then my belly gets really really tight. Anyone else having anything like this? I'm drinking lots of water. But I have been working 12 night shifts (I'm a nurse) and I'm worried it's too much.