Hi Star. I've been fortunate not to have to go through IVF, but have to say if I did, I would feel the same way as you about a Hen do. Fun though they are, I'd be a nervous wreck. Could you not say you're going into hospital for another reason - like wisdom teeth extraction? Or just something non-specific like "investigations" - thinking along the lines of a cystoscopy or other type of camera jobby. If it were me, I'd be inclined to say I was going into hospital for a procedure and not specify what - who'd be nosy enough to ask details?