Just that, been married 21 years but I like to keep it to myself. Partly because I don't want him to know the details and partly because I'd hate to be accused of being hormonal if he knew it was that time of the month for me. I have 3 daughters and it's never brought up. It's not a secret or shameful, I'll ask them if they need pads etc it's just not mentioned as part of conversation. I have a feeling that this is unusual. I wondered if any other families are the same?