simply put, your phone is not tapped. i had a friend who was under surveillence, had a PI on his ass, and eventually got busted in a sting operation, yet they never tapped his phone. so how likely is it that they would tap yours. ironically, that friend of mine use to make us talk in various codes, and it didn't help him a damn bit.
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"When danger or pain press too nearly, they are incapable of giving any delight, and are simply terrible; but at cetain distances, and with certain modifications, they may be, and they are delightful, as we every day experience."
--Edmund Burke