Hi and welcome to my world. I had an iritable uterus with my first and current PG. I went into labour at 32 weeks with DS, labour was ceased, but due to significant changes to my cervix i was monitored in hospital until PROM at 33 weeks and induction at 34 weeks. I had an anterior placenta and coudn't say if DS was active in utero as I didn't feel much, though he has not stopped moving since.
I was given steriods at 30 weeks in this PG due to early arrival of DS as there is an increased risk of subsequent pre trem labour. I have been getting lots of pain for the past 3 or so weeks. There is not much you can do, I have used heat packs, positions and breathing to get through the pain, it is a little debilitating as movement and activity can bring it on as can sitting in certain posions for too long. I'm generally comfortable lying, but unfortunatly you can't do much of that while caring for a toddler.
My goal was to make it to 36 weeks as it basically term. An irritable uterus can mean labour may be much quicker as your body may have already made significant changes. I described my sysmptoms to my mum after the birth of DS and she said it was very similar to symptoms she experianced with me and my sister, I was born at home 20 mins after mum realised she was in labour.
Good luck, I wouldn't worry too much, just be ready for labour.