I had the temper from hell for the first 8-10 days and I'm the most laid back person I know
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My DH asked for his wife back and my 4 year old got frightened as she thought I was an alien that looked like Mummy
You will get past it and feel yourself again. It's a real effort to not let your mood get to you, but just try and do nice calming things like have a bath, paint your nails etc and before you know it you will have lost lots of weight and feel on top of the world!!
You can do it!!