I am on 40mg of Citalopram, 900mg of gabapentin and 40mg of omeprazole. I suffer from pain in my left breast lung and left side of my head, the pain gets worse when I lie down at night and I have also been smoking some grass. Tonight, I had the most excruciating headache, I thought that my brain was going to burst. I have decided that I want to stop smokingcanabis and also cigarettes. I have had this pain for 7 years on an almost daily basis and it flared up real bad tonight, I actually thought I was going to die. Can you please adivise me.