Ambien Addiction & Memory Loss

Help me, i don’t know what to do. I can’t tell my husband about over using my ambien. He thinks he has it hidden. I have servere headaches and have had them for years. I have what it callpuseotumor cycerabal (spelling isn’t right) i have been given a VP shunt and it is on the right side of my head behind my ear. it drain fuild down into my artery in my necck. Any way back to the ambien, when i sleep I DONT HURT!!! I have been on it for years and have tried to talk to my doctor in around about way but he dosen’t talk me serious! I’m on 10mg. at night but if i can find them i will take three a day. I sleepwalk, have memory lapses. I have done many cazy things that my family doesn’t know ab out. I have a problem with short term memory. I was a school teacher and i can’t even spell decently. HELP I don’t know what to do!