Hi, I have had very bad back pain in my lower left back which goes into my buttock for over 2 weeks. I saw my doctor two weeks ago, who thought it was chronic back strain. I have been very careful since, moving around, but sitting down and standing for short periods is painful. I have dull period like pains in my stomach although not due a period for another 10 days or so. I have noticed over the last few months that my back gets painful for a couple of days before my period, which goes after a few days, but this pain isnt going away!