You should be fine as this is not an immediate relative petition and currently they are processing 2001 so unless yours was filed near that time you have a long wait. You should in future put sibling petition filed if it asks that
Contact the consulate and inform them Explain the situation and see if they allow you to keep the visa. You will be wise to do that.
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J Charles Ferrari Eng & Nishimura 213.622.2255 The statement above is general in nature and does not constitute legal advice, as not all the facts are known. You should retain an attorney to review all the facts specific to your case in order to receive advise specific to your case. The statement above does not create an attorney/client relationship. Answers on Avvo can only be general ones, as specific answers would require knowledge of all the facts. As such, they may or may not apply to the question.