Do you think that doing this spa experience thing would be safe at 18 weeks?
www.thesanctuary.co.uk/spa-voucher-evening-spa.htm
Its being organised by a group of friends and, much as I would like to go, not sure I will be able to get much out of it. I thought that steam rooms etc would not be safe because the baby can't regulate its own heat (i.e. I shouldn't get too hot or cold!)