assuming they have no other information on you and your background is clean.
Perhaps, it would require a full review of the facts and the situation to determine if the wire tap can be successfully challenged. You need the help of a criminal defense lawyer immediately if you do not already have one. If you do talk with him about it. If not find one now. Federal drug cases can result in extremely long sentences. The federal system is very capable of destroying a defendant. Do not post facts about the situation on line but talk with a criminal defense attorney immediately.
It depends on the officer and how they draft the warrant request. Then it will depend on if a magistrate signs off on it. There is no magic formula for law enforcement on what constitutes a valid request on behalf of an informant. You should have an attorney since you could be corralled in as part of a conspiracy, if you are not careful.