im after some advice from you girls, im on day 21 and for the last 2 days i have had really bad lower back pain (right in the middle) and tonight i have spotting (i guess not even that, more just a bit on wiping), we aren't ttc at the moment so not sure what is going on, any thoughts ? im thinking it is probably just a screwed up cycle as its only the 2nd since my last m/c or my pcos is playing up......