Geese are the same as ducks in that their first egg is smaller and they get bigger until they reach the average standard size for that particular layer. I am told that for geese, 2nd year eggs are bigger than 1st year (and the goslings will also be larger).
I also got my very first ever goose egg (from my own gaggle) today. She is an 8mo dewlap Toulouse and her egg was 136 grams. It was also bloody, but I've had first eggs from ducks that were bloody and that went away after a few days, so I'm not concerned about my girl at this point. My girl hatched from a 150 gram egg and is fairly petite for a dewlap. My biggest geese hatched from 185-210gram eggs. My smallest geese (hatchery Africans) hatched from eggs that ranged in the 130s.