I have always had regular periods up until recently, i had my period in July, skipped a month, had it mid September and haven't had one since. I went to the Dr, pregnancy tests were negative, thyroid and hormones were normal. I just had an xray done of my whole spine done Friday, and started spotting the very next day with cramps, it went away the very next day. Is this normal? My next appointment is at the end of the month, couldn't get one sooner it's been worrying me.