ali, you have just reminded me that our beast of a car needs its MOT this month - that will be a few hundred there ... oh, dear lord.
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fishy, don't beat yourself up or feel down about your spends. I read your posts and don't see anything you have spent as unnecessary. You are pregnant and, as sure as God made little green apples (love that expression) you are going to need a fair amount of stuff. Sure you can be careful about what you buy - and as far as I can tell - you are being careful. You need certain items and have to buy them. Is there any way you can increase your income a bit? Is there any work you can do from home? Proof reading? Are you a good baker ... have you any friends who need cakes that you can sell to? Are there any local offices who need admin assistance that you can help with? Or perhaps you could do some babysittng yourself? With regard to the shorts you mention - could you cut off a worn pair of maternity trousers? Or perhaps Ebay might provide a cheaper pair ... if you really feel you need to return the ones you bought? I wish my DS was younger - I would package all his clothes up and send them to you.
chile, oh I am so happy. Some residual stiffness/discomfort in mny back but I am pretty much pain free for the first time in 10 days. So, as far as I am concerned that £80.00 was money really well spent. Hyper flexibility basically means that my joints move more than they should and the muscles in my body allow for greater range of movement. As you say, brilliant for yoga but not for much else. Have to be careful that I don't hyper extend which sometimes doesn't happen ... 
Spent £50.00 on Amazon yesterday. Most of the spend is on books for DS and there are some books on pre-order. DS reads so much and so quickly that I think I could be single-handedly keeping Amazon in business
. The one thing I do like about Amazon is that, if you have books on pre-order, they sell them to you at the lowest price that book achieves. So, hardback of the new Rick Riordan Kane's Chronicles book was £5.80 ... not bad for a hardback. I know it is a bit
to buy hardbacks for children but he re-reads his favourites and we loan them out to his friends so we do get some value for money and also some credit in our 'God-bank' 

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Am making two cheesecakes today. My DSis's work has a cake day a couple of times a year - the winning cake gets a prize but, more importantly, people buy slices of the cakes and all monies raised go to Help the Elderly. So, another deposit in my 'God-bank' ... hahahaha.