38 weeks today!

Nicole
So today I have reached the 2 weeks left mark and I'm so excited. Tonight though I have been having cramps and an extremely sore back. I've done nothing at all strenuous today for me to get a sore back. Also have sore legs, as if I've walked loads today but I havnt. Could this just be Braxton hicks? Had Braxton hicks last week too but cramping slightly worse tonight. Anyone else like this at this late stage of pregnancy?