In a word, yes. Lol if your getting lower back pain, like period pains or cramps, that's radiating round into your sides and eventually your lower stomach, it could be contractions! From lower stomach and sides, it should move into the top of your bump and that's when if can really get going. I'm only going on what the MW that took my antenatal class said, so don't hold me to it, but sounds like it could be. Or it could just be backache! Hope you're sorted soon, either way!