2nd pregnancy. 38 weeks. Well the last couple of days I have been for quite a lot bowel movements and getting aches on my lower tummy and back. But last night when I went to bed I kept feeling the baby move and push down into my pelvis (lightening) but then after that it started to feel like period pains, then turned into regular contractions every 10 mins, didn't feel like Braxton hicks because they got stronger, and radiated down my belly and around my back.. But after about 3 hours it completely stopped! Why is this, what could it be? It's my second pregnancy. I don't remember feeling like this