After weeks of abdominal pain I finally got it checked out. Doctors discovered an 11cm diamater mass. At this point, they think its Non-Hodgkins Lymphoma, but are doing more tests to find out exactly what it is.

I avoided telling my girlfriend for a week or so, but she called me when I was drunk and I told her everything and said I was breaking up with her. We've since talked and are on a "break". 

My girlfriend has a history of depression, anxiety and self harm. I want to distance her as much as possible from the likely shit show that is coming my way, but on the other hand I'm worried what this might do for her mental health. 

She is just starting to get better and I figured dealing with a break up is easier than dealing with all the shit that comes along with cancer and possibly death of a SO. Not to mention I won't be able to give her the care and support she needs. 

We are currently long distance as I'm working interstate.

I want to emphasize that I know what I'm doing is shit and it will hurt her, so I don't want the sympathy "NTA". Give me your honest opinion.