I'm 39+3 weeks pregnant and last night I had terrible bad ache and period like cramps, the pains were not too painful as I managed to fall asleep. However today I feel sh*t, I have on and off pains in my back, my stomach has on/off tightenings. And a pain on both of my stomach sides. All I've wanted to do is sleep all day, and that's exactly what I have been doing. 
All, sorry if this is tmi, but last week I had a serious case of diaherra which I assumed was my body clearly out. However today I feel constipated, also again this may be tmi but I feel as though my vagina is bruised/swollen. Could this be signs of early labour. I am still feeling baby's movements, so I am not at all worried.