Heeelp! Am I going to be arrested? VA, US

[cuatiklad]

I’m an international student, living in <?:namespace prefix = st1 ns = "urnchemas-microsoft-comfficemarttags" /><st1:State wt="on">Virginia</st1:State>, <st1:country-region wt="on"><st1lace wt="on">United States</st1lace></st1:country-region> for 6 month now.
I was stopped by the police an hour ago; they took a vail of POPPERS they found in my car. They told me they were going to tested “and if it comes positive for drugs, we are going to visit you with some warrens (I don’t know if u spell it that way) and arrest you”
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IS POPPERS ILLEGAL IN <st1:State wt="on"><st1lace wt="on">VIRGINIA</st1lace></st1:State>????