Is this Braxton Hicks?

My lower back is aching tremendously, my lady area feels like someone kicked me, and my lower abdomen is cramping every so often. Are these signs of BHC or something else? My OB is not returning my phone calls and I don't want to go to the hospital over something silly but my back hurts even when I lay down and my stomach cramps no matter what. My groin mainly hurts when I walk. Any comments or thoughts?