Dear Justin,
I feel sorry that you had to suffer from nausea all through these years. Several medical disorders can cause nausea. It is important that you get a complete evaluation by a physician for specific diagnosis and treatment. If you think you are depressed to an extent that your daily functions are being affected, you may need to consult a trained Mental Health Professional. A combination of medications and psychotherapy helps in treating depression. Good Luck to you.
Mine does not feel gastro in origin. I get a foggy feeling in my head with the nausea, leading me to think it's something like motion sickness or sinus or inner ear????
I have had migraines too and the headache doctor I saw said the nausea could be a "variant migraine" (no head pain - just nausea)
Right when all this started I was doing some psychological trauma therapy called EMDR (Eye Movement Desensitization and Reprocessing). This technique uses eye movement to tap into the part of the brain where the trauma memories are and supposedly desensitizes you.I am still searching for an answer. I empathize with you. Take care.