Early labour signs?

Hello mamas! I have a 16m old and am 26w6d pregnant with di/di twins, I have a history of preterm labour from my last pregnancy and also some complications during this one as well, but I’m just wondering did anyone get nausea, lose stools and weird stomach cramping in your whole stomach kind of before going into labour? Or do I just have a stomach bug? It randomly started happened yesterday and I’ve had 0 nausea this entire pregnancy