I'm worried that my medical bills are causing problems for my family.
I'm worried about whether or not the medical expenses for my illness are causing problems for my family.
「病気の治療費用によって家族に迷惑をかけているか気になる」は英語で「I'm worried that my medical bills are causing problems for my family.」といいます。
他には、
I'm worried about whether or not the medical expenses for my illness are causing problems for my family.
ボキャブラリー
I'm worried that/about = ~気になる
whether or not = ~かどうか
medical bills, medical expenses = 病気の治療費用
cause problems for my family = 家族に迷惑をかける
illness = 病気