How often to wash bed sheets?

Hi I was curious how frequently people out there are washing their bed sheets, pillow cases and quilt covers? And what would be the suggested frequency?

I'd wash the sheets maybe once every 3 or 4 weeks depends.
But, you would need to wash the sheets when you're through with a cold or something or like the person above said, when you have a pet. If you feel that your sheets are dirty, then put them with your laundry and wash them with your laundry. I wash mine when mine get bad. But, then I do my regular laundry once a week.
I do my bedding like I said 3 or 4 weeks. This goes for my pillow cases, and quilts as well.

For neurotic housewives its once every 4 days, for young lads at university its never, or once a year. For the rest of us, once or twice a month is probably nice depending on when you have your shower and what exactly you DO in your bed... lol..

I wash mine at least once a week, usually twice a week...

I wash my bedsheets every week.

I wash bedsheets anytime ranging frrom a week to two months