Michelle is 46...it's always possible.
My stepmother had my brother when she was 46. At the time, her youngest child was 18 and oldest was 26. This is back before amnio was done and ultrasounds didn't exist either, expectant mothers smoked and drank alcohol....she did both. My brother was full term, weighed an ounce or two over 5lbs. He was always healthy, is 43, 6'4", incredibly intelligent with a Master's in Business Engineering from Northwestern and a great job. But he was a spoiled brat and defined "wild child"!