Meccorad, i feel so badly for you. Maybe because i can relate so much. That decision.....do i stop? can i keep going? What will everyone think? It is so painful to think about. Even for me imagining what a choice you have to make.
If it helps any my parents have always told me that health comes first, always remember you are the most important thing and success you are measuring by a specific criteria. I have come to realise (i still am, and i think alway wll have a guage on success as i did before despite this) that success isn't finishing a degree, earning lots of money, having a 'happy' family. Success can be making a terrifying decision and fighting to get through each hour of the day. Just because noone else sees the battle doesn't mean it is not happening.
I know you have alluded that there is a lot more going on here that you are telling us but perna is right, i think you are stronger than you believe. Take each day at a time, the most important thing is to get through each day. Anything more is a bonus! Please pm me anytime.
take care.