I second calluna.... Surely dh will be understanding enough to let you tell at least one person! Tho I guess if he says no u can just bombard HIM with all the pg & baby talk he may change his mind then!
I agree about telling (some) ppl pretty early in pg as far as mc goes, if God forbid I ever have to go thru that I know I'd DEFINITELY NOT be able to keep THAT secret! Hope he comes around & u get bfp soon