Cancer kills quickly, but not "tomorrow" quickly. This gives an opportunity to consider the big picture and how you'll navigate this challenge. The OP himself writes that his savings lasted for 4+ months. I was surprised that, in this timeframe, zero thought appears to have been given to the question: "What happens when my money runs out?".

The final outcome may have been the same (asking for donations online), but you'd be starting out early instead of with your back against the wall. Same as with startup funding: if you look for funding only when you're out of runway, you'll have a next-to-impossible time of securing it (or securing it on good terms).