I'm so shaky at the moment. I was in cinema and suddenly got pain in lower back were the spasms happen. had a spasm earlier today and last night (cant remember when the spasms started happened but it was before the anxiety so its not that) normally i get one every few weeks or so and there so painful i have to stand still and hold my back..... and if i breathe in after the initial wave of pain it hurts and then it passes. the pain is more on my left side (kidney) im very close to tears thinking ive got kindey failure as its all on one side. Also my period finished two days ago but during the day ive been spotting brown blood. so very scared.