Can beach police take and then lose my personal items because paraphernalia was inside?

At the beach this summer with friends cops were called on our beach house and someone let them in the house. After they were done searching they linked me to drug paraphernalia in my book bag because of a key chain picture of my girlfriend and I in the book bag.

I took the ticket no problem the cops left and i went to court a month later.

At court I just wanted to pay the fine and accept the charge.

I believe I pleaded no contest, and took a 3 month probation and charge.

After I signed the papers I asked for my stuff taken as evidence back , since it was been more than a month since the date of the charge.

The judge seemed bewildered that my book bag and personal items were taken at all. She gave me the ticket issuing officer number.

Its been another month and I am going to call to see if my evidence has been found.

My wallet with cards and my old keys were still in the bookbag, with my keychain prom picture. You cant replace that.

Is there anyway the case can be dismissed if none of the evidence can be found, even after i plead no contest?

Thank you and cheers