Alice - I think you can use the 'I had twins' causal factor for the weight gain. You will probably find once they start walking the weight will drop right off! But, I know what you're saying, it's all about how comfortable you feel in your skin stepping back into the workplace.
Had dentist appointment today. Apparently dental issues can affect fertility. Go figure. Is there anything that doesn't! Also I hadn't been for 25 years so it seemed like the right time. Anyway, to my pleasant surprise, 2 fillings required and some cleaning! Which means, I have saved 25 years of dental bills and still have great teeth. So I did some more shopping!