Feeling crampy at 31w4d

Shelby

So for the last few hours i kind of feel like I have period cramps, but they don’t really seem to come in waves or have any sort of pattern. I was thinking Braxton Hicks but usually my stomach is really hard when I’m having them and it’s not. I’m drinking water and that doesn’t seem to stop it. It feels like the cramps that come right before you start your period. Is that normal or should I contact my midwife?