Wednesday 17th August

Eggs left: 0 probably. Years left till can no longer have children: 0. Percentage by which likelihood of having children decreases daily: 500. Minutes spent thinking about Meera Syal: 4,000.

8.55am. Am peri-menopausal. Whole thing is so horrific that cannot entertain reality of same or tell anyone. My periods have suddenly stopped without me having any children. Have just spent two hours sitting bolt upright at laptop, frenziedly attempting to get through all 132,0000 exclamation mark-strewn sites thrown up by Googling "menopause" - even very word gives me shiver of fear. Searching through Hotflush.co.uk, Pituitaryworld.com etc. for reassurance that am far too young for this to be happening. Hate being a woman. We are biologically oppressed race, going along normally like men thinking would be nice to have children one day, but not yet, then suddenly: "Blup, sorry, you can't any more hahahaha."

Must go to work. Googling is like in old days before internet, when got stuck reading travel brochures when late for work, or eating entire bag of Cadbury's mini-eggs, feeling sick and disgusted with self but unable to stop. Have been immersed in Hotflush! for last 40 minutes trying to get into Frequently Asked Questions and being thwarted at every turn unless agreeing to hand over e-mail address and thus be inundated with peri-menopausal spam: invites to "Hotflush!" events, ads for books by self-righteous smock-women with long grey hair, and recipes involving peri-menopausal monkey sweetbreads.

9.45am. Just got into FAQs on Busyoldpituitary!org: "Peri-menopause! - a kind of 'dress rehearsal' for menopause! - for some women begins as early as age 34."

OHMYGOD. It could really be happening. Bugger: am supposed to be at work in 15 mins and am not even dressed yet.

10.45am. In morning meeting attempting to covertly Google "menopause" on Blackberry.

"The first symptom is usually an alteration in the menstrual cycle - a shortening or lengthening of the time between periods." GAAAAAAAAAH!

Was Richard Finch, forcing his terrifying face between me and the Blackberry and bellowing: "BRIDGUUUUUUUT!"

"What?" I said indignantly, hiding the menopause-filled Blackberry under my skirt.

"I'm thinking licensing laws change. I'm thinking binge-drinking. I want you at a café table doing continental-style drinking for seven hours to see if you can manage it without becoming pugnacious and bellicose."

"I do not wish to participate in 'me, me, me'-style personality TV journalism," I said, primly.

"Oh, fuck off, Miss Prissy Pants. It's either that or dress up as Madonna, get on a horse, then fall off it."

"NO!" I replied, firmly, thinking: Madonna isn't peri-menopausal and she's 47 - but maybe she is, and that's why she fell off the horse. "Why don't I do the drunk laws item without me in it?" I said slyly, as if distracting a tantruming child. "Would you like me to get a Frenchman, a policeman and a lager lout to have an argument about it?"

"All right," said Richard sulkily." But make it a Frenchwoman in a skirt. And I want a nice young one, not some middle-aged old bag."

11.30am. Back on Google: "Every woman experiences peri-menopause differently... but she usually mimics her mother's experience." Is no way am going to call my mother about this. Is nothing worse than mother's conversation veering towards my body: "Did you get that talc I sent you, darling. Keeps you nice and fresh, doesn't it?"

11.45am. Am going to call her. Is no point burying head in sand in manner of peri-menopausal ostrich.

Noon. Was nightmare: "Oh hello, darling," she gabbled. "Guess what? Caroline Lakey's neighbour - you know, the one that's the snob? Well. That garage she's supposed to be building: it isn't a garage, it's a swimming pool."

Had to barge into seamless gibberish with: "Mum, how old were you when you had the menopause?"

"What, darling?" she said, followed by a crash. "Colin, have you put that Swiss roll tin in a different cupboard?"

"The menopause," I hissed shuddering inwardly.

"Oh, I didn't have the menopause, darling! Mind you, Audrey Wainwright - you know, lived opposite Lawley's cat food? - She had hers at 32. You could tell she wasn't normal before, though. Shrivelled. No! It didn't affect my hormones at all! Bridget!" she suddenly yelled, as if I was five years old and drawing on the wallpaper. "You're not having the menopause are you? Already? I told you it was time you got on with it because..."

"No, no, it's just..." I panicked. "I'm doing a piece for Sit Up Britain... on HRT! Anyway, mustrunbyeee!"

8pm. Back home, still Googling menopause. Only bright spot is that continental-style drinking item was dramatic success, with lager lout and Frenchwoman agreeing to engage in reality-show style 24-hour drinking session to see who is most compos mentis by tomorrow's programme.

9pm. Still compulsively Googling. Jude and Shaz keep ringing up about meeting them in Electric even though have explained to them quite clearly about peri-menopause.

11pm. Twenty minutes ago Jude and Shazzie burst into flat, by which time I had to be prised away from laptop and forced to take slow sips of chardonnay like invalid trying to keep down clear soup.

"It's him, isn't it?" said Jude. "I bet he hasn't called. Bastard."

"He has, but he's gone to India for work."

"Which he?" tittered Sharon. "Sorry, Bridge, but you've got to admit it's quite funny, sleeping with Mark and Daniel at the same time."

"I am not sleeping with them at the same time," I hissed. "I accidentally slept with each of them separately."

"Talking of which," said Jude. "You know about your periods stopping and you being peri-menopausal?"

"Yes?"

"Have you done a pregnancy test?"

"Of course I bloody haven't," I said, wondering how Jude could be so cruel. "I can't have children any more. I'm peri-menopausal."

"Well, maybe you should just check? I mean, sometimes high spirits can bring it on. Look at Meera Syal. She gets a cute new husband and bingo! Baby! And she's miles older than you."

Upshot is we are now going to late-night chemist to purchase completely pointless pregnancy test.