Will I be called as a witness?

I was present when a house 2 months ago was raided and contraband was seized. I was never arrested/questioned but I want to know that when the people that were arrested go to court , will I be called as a witness by the state or something? Why would they want me as a witness? I do understand it is possible I "can" be charged under the joint-constructive possession theory, but I was not arrested. Is this possible or am I being crazy.