Maybe you could organise a blessingway/baby shower. A blessingway is perfectly "acceptable" for any pregnancy so if you started with mentioning that you may feel less "greedy" or whatever it is that is holding you back. But then you can let people know it'll be fun "like a baby shower" then still have the games and pressies and things but add a little blessingway bit with messages of support for your birth or something?