Can anybody help me about cyber sex blackmailing?

i met a lady on omegle and she asked for my fone number which i dint give.......we had exchange of our facebook ids........then we had long sex chat on facebook..........she cooperated fully........but after chat was over,she said that she is the police and i m under arrest charged of raping a woman on internet.........she said that she is 16.........she is saying that police can come anytime...is there any worry time?