Tightening/Cramps at night !?

Lately I have been waking up at 3.00 in pain from my stomach cramping/tightening. It’s like a dull pain that will go and come and mostly it will happen to my entire stomach and then to my upper abdomen. It will come for 5 minutes and stop then happen again and I’ll be tossing and turning.. is this a sign of Braxton Hicks ? I have been feeling a lot of pressure and pain when I walk and stuff but what’s going on with my stomach is new and I do get up during the night to use the bathroom so I have no idea what’s going on