I have had a spinal fluid leak for 3 years. I just had a spinal cord stimulator implanted so I have gotten off all my meds and I can really feel the leak again. I feel alot of presure and a slite headache again. When it first happened, due to spinal fusion, I was bed ridden for three months due to headaches. The Fentynal pain patches really helped. Also I went to Shands for it and they said eventually my brain would get used to it. I thought it did until now. After getting off all the drugs I still feel it in my head literally!!! I would lay money down that your headaches are from your CSF. There are things they can try to stop it but none worked for me. My DR gave up. Did all he could. I will pray for you.