hi, ive had really bad cramping on left side today and going round to back, been so painful standing had to sit dwn, had bleeding a couple days ago not sever but more than spotting, have had it since 12 45 not as bad just took paracetmol which i think has just masked it, feels like cramping and really bad stitch bottom of stomach up to left side and back, have had no bledding, pls help??