You can make Kiddush on bread on Shabbos
Only the Friday night kiddush, though.
To the original poster,
Please do not put yourself in danger and always ask a shaila (to a competent poseik) where necessary.
Remember, neither the mitzvah of kiddush nor the mitzvah of the arba kosos are docheh pikuach nefesh!
“V’nishmartem m’od b’nafshoseichem” comes first.