30 weeks am I going into labour

Amy
Hi, il try and keep this as short as possible I'm 30+3 weeks pregnant with my 3rd baby but a bit unsure on labour signs as I was induced with my first two babies, so for the last week Iv had a bit of a upset tummy, feeling nasea, bit of diarrhea, Iv also had a lot of back ache lower and in the top of my back, Iv also had cramps here and there but no regular tightenings has anybody else had this or know what it could be thanks in advance!!!