Marrying a cohen and not having children

Is there still a restriction on marrying a Cohen if I am past child-bearing age and therefore there would be no children from this marriage. I had an unfortunate evening with a non-Jew prior to my becoming Observant and therefore always considered a Cohen not an option. I have never been married.

A woman that had relations with a non-Jew can't marry a Cohen even though she is menopausal.