In terms of size, this is my first/last pregnancy so can't compare it to anything but .... at 32.5w I am 39w fundal height. I am now only growing in size at the same rate as a singleton (ie 1cm for 1 week) after initially growing 2:1 up until a fortnight ago. I don't know if that is just me or a general thing. My OB doesn't seem concerned so that is my reassurance. He did mention though that he is delivering twins today at 37.5w where the mum was measuring 50w last week. He said at 50w she is enormous and extremely uncomfortable and that he was worried she would put a hit on him if he didn't deliver the babies now !