I somehow deleted all pix and contacts from my sim card. Could they just be hidden somewhere?

Unfortunately no, if you purged the data from the SIM Card, you essentially formatted it. The Blackberry is not like a PC in that it doesn't have a Recycle Bin or Temporary Folder in which trash gets sent to. Depending on the model you use, if you have a Blackberry User Account associated to the device, you have the option to save your data to your profile (cloud), essentially creating a backup. The only other way to retrieve this data is if you used the Blackberry Desktop Manager and performed a device backup prior to the data deletion.

Hope this helps.

Forgot to mention, your cell phone carrier should have a "Backup Assistant" feature that may allow you to retrieve your contacts. However, if you've ran a contact backup after the contacts were deleted, you may have overwritten that backup.