I actually thought I was going into pre term labour today (I'm 27 weeks) because the stomach cramps I was getting were that bad. In fact, the pain was worse than I can remember being in when in labour with DD.
I was almost 100% sure it was a tummy upset as DD has one and was having really bad nappies, but OMG the cramps were coming at regular intervals and bringing tears to my eyes every time. The worst of it was I was driving at the time (a 5 hour journey that ended up being 8 hours) but luckily there was someone in the car to take over.
I eventually went to the toilet and things have settled down - but is that normal?? I very rarely get stomach bugs and I thought I had a high pain threshold so this really worried me