abortion scheduled

I found out about my pregnancy about 3 weeks ago. I'm now approx. 11 weeks. 
I as well as my doctors know that me being pregnant at this moment is too risky for my health and the pregnancy due to my health issues and etc. I would have to plan with my doctors if I want to get pregnant. Otherwise, termination would be the most logical option for my health. 
I didn't think I would have to go through this but a part of me is also wondering what would happen if I didn't terminate...