Thank you all for the reassurance (and Victoria for the link). I do feel better for it, and it was not a terribly heavy fall so with luck they are oblivious to any drama! I was going to ask my midwife to listen for heartbeats next week anyway and will make sure I do now. Also am going to wear trainers for walking to and from work for the extra grip (those shoes have such a low heel they're almost flat, but evidently still aren't that stable on a slippy floor).
To those who aren't getting enough support from their OHs, in this situation I think you just have to do what you can but don't push yourselves. Maybe slightly lower your cleanliness standards (and hope that they will crack before you do!) and praise yourself for being amazing and capable. It doesn't bear thinking about how much of a song and dance men would make if they had to carry babies - if they don't realise how brilliant their wives are for doing it then tell yourself regularly!
Stretch marks - I am using a variety of things every day on my stomach, and occasionally on my breasts and thighs. I've got some bio-oil, and a few things I've been given like Neal's Yard balm, Body Shop brazil nut butter and a lovely anti-stretch mark cream. So I'm pretty well catered for. I tend to believe that they will come if you're predisposed to it so probably can't be avoided, but also that making sure the skin is nice and moisturised will help with comfort anyway when it starts to expand and you may as well do something.
Hippy enjoy Wales this weekend and I'm glad you feel so reassured after your appointment. Hearing the heartbeats must be brilliant!
Holidays I drink a lot of water anyway (at least 3 litres a day I would guess, plus a couple of cups of tea) - I was actually told by my m/w at the booking in appointment that I was drinking too much - which I didn't think was even possible unless you were skulling silly quantities! She said no more than 2 litres a day and I think the reason was that too much can put a strain on your kidneys. Not sure how convinced I am as I think being well hydrated is important, but I am trying not to overdo it now.
What's everyone up to for the weekend? We are going to see my parents tomorrow (they only live about 90 mins away) and otherwise have the weekend clear. It looks as though it might be a bit grim on Sunday again so could be a good day to mooch around the house. Never a problem for me but my husband gets bored!