signng of quit claim deed

my mother had passed about 12 years ago. when she passed i was told by the siblings that we needed to sign a quit claim deed in order to sell the house and divide. i had a funny feeling about all this, and hesitated to sign. i had asked to buy them out and use my inhertance as the down payment. nobody acknowledged my feelings. however i was also told by my mother prior to her passing she was leaving the home to me. under a pressure from sibblings i signed the quit claim deed, as time passes i always needed to know. i did search the property apprasers and found i was the only one who signed a quit claim deed. the house was sold for a below market value, the money was then divided between all of us. i strongly believe i was conspiried against. do i have any legal rights? and where should i start.