Hey. This might not be what you want to hear but from my experience not a lot of people are prepared to answer that question really well. I know one of my best friends who will literally come to my door and helps make sure I don't stay in my bed all day is someone who answered with just "... oh". Especially people who haven't experienced it themselves or had someone close to them that has, it's very difficult for them to really know how to respond.
I would advise to just give them a little slack. Some people are just really bad at reading what other people want. And some people are just really unsure what do say. If they continue to not be supportive then by all means drop them like a hot potato but I suggest giving them some time to educate themselves. The only people I have told treat me the same as before I told them because I prefer not to be treated differently. In my case I just wouldn't like my friends to know.
I know you're really disappointed in the responses you have gotten and it isn't cool that they couldn't read what you wanted in their response but please relax a little. Your true friends will still stand by your side at the end of the day