Normally when i get backache it is always in the top of my back, havn't had it low down since i was about 4/5 months preg. Recently the past few days ive been getting it lower down, and with the period cramps thought labor was about to start but then it would stop as usual. Today it's been different though, the pain will start in the middle of my back then work it's way down lower and then go. Im getting tightenings along with this but they arn't painful, maybe accompanied by mild cramps again but sometimes that mild i can't even feel it! Is that what contractions feel like? Or is it a constant ache in your lower back? Not getting my hopes up again or anything, im just curious.