Fish, the presents were some hooded baby towels, and a sleep suit :) Sensibly in 0-3 months size, not newborn - my step-MIL knows what she's doing!
Scream, your sciatica sounds horrible. Have you ever had its cause diagnosed? I had it constantly for about a year, although mine started with the shooting pains in one leg, went on to pins and needles down legs/in feet (again, almost constant), with a dull back ache on top if things were really bad. After months of physio, which sometimes helped and sometimes didn't, I finally had an MRI and they diagnosed a bulging disk (L5-S1) which was causing it. The recommendation was surgery, which I blindly ignored, but took Alexander Technique lessons instead, which have helped me control it :) Although it's probably a genetic condition which I've exhasperated, hopefully the AT will help me keep it in check...
I say all this because I wonder if something similar might help you? Mine was so bad it was hindering my career (couldn't sit in lectures (studying for Masters at the time) or at a piano properly)...
Also, I think a lot of couples argue more during pregnancy - it's a time of so much change and new-ness and scariness. Definitely think Biscuits's idea of getting away sounds good - or going to do something that's just about the two of you! Also, have you both tried talking about all your thoughts and feelings and fears about pregnancy and babies and things? It may be that he's very worried or concerned about some things, which are making him stressed - just as your lack of eating/complete exhaustion/general PG hormones are probably making you more so. Could there also be work stress filtering in? Whenever DH and I are having a bad time and arguing lots, when we sit down and try to diffuse the situation we realise it's normally because of a huge build up of things- talking about them and identifying them doesn't always make it better, but it makes it easier to see what's going on from both sides.
Biscuits, the restaurant was L'Escargot in Soho. It was very nice, don't get me wrong - we also had the pre-theatre menu, which might not have been as 'posh' as the full menu, but was very affordable (£15 for two courses, £18 for three!), as we all had places to get back to. Saying I've been to nicer places makes it sound like I frequent restaurants all the time - to be honest, the ones I go to most are those you can exchange Clubcard vouchers for! DH and I both agreed, though, that we have had nicer meals in places we've been for other 'celebrations', like Gauchos steak house (their steak was delicious, and I don't really like steak!) where we went after a graduation, and smaller but still posh-ish restaurants we went to celebrating events such as our engagement with family.
We're away for the next couple of days (family funeral, not sure what the internet will be like for MN, nooo!), but that does mean I have a ridiculous amount of work/chores to complete today - and it looks like DH is ill to top things off, meaning he probably won't help. Sigh :( So much for a relaxing Sunday...