pro_ohp

Hello everyone im new here using Acronis DriveCleanser 6.0 and got problem my 69gb of data is gone, when i try to wipe my partition. I'm turn on Acronis DriveCleanser 6.0 click next select d: 69gb partition click next select leave partitions as is select algorithm called u.s standard, DoD 5220.22-M and press proceed when i think what i do and cancel it but my D: disc with 69gb of data is gone. How get back my music, docs, videos, etc? I have in this partition very important files... Please help me.