I am 48 I had me tubes tied 9 years ago. Over the last year I had a normal period then missed one then a really heavy one then missed one then two normal ones now I have missed 3 with no ovulation pains at all in between where as j used to have them every month 10 days before starting. And now j have terrible heartburn and I'm moody and cry a lot, is this the change of life or am I pregnant