Im so sorry that your life has brought you here and that you're feeling so horrible. I'm glad that you had the ability to voice your thoughts with someone close to you. Being able to confide in a parent especially is a gift. What you are going through is a real legitimate illness. No amount of surgeries will be enough to be satisfied for you (I'm sure you already know that though). Luckily though, these types of conditions are definitely treatable! Would treatment to overcome this condition be something you'd consider?
I know that it's ultimately your choice, but I'd hate to see you go if this was something that could be treated for you. There is hope for a better future. Regardless, I hope that you are truly able to find peace with whatever choice you make for yourself. My heart is with you.