lied to a cop and im scared what do i do.?

a cop came to myself because i was role playing that i wanted to be reported for something bad. that i know i didnt do so im not worried it was just for the thrill but i didnt think she would really report me. she knows now i didnt mean it but the cops still came and took my phone. the messages were deleted and i signed an oath saying i wouldnt lie . but i told the cop i didnt talk to her about any of this stuff and i did but i deleted the messages. it was saying that i was a pedophile and how i wanted to be reported but like i said i have been worrying like crazy because if he checks my deleted messages he will see i lied. what will happen if he finds out i lied :( i know i should of said no to giving my phone but i didnt know what to do. please someone help me.