no room
I agree. You don't want to discuss this on any social media at all. They can and will get access to it. Not on any email unless it is to an attorney. You need an attorney. Look for a criminal defense attorney in the county where you are charged. An expert will be required to testify. If the reading of .19 (must be an error-that would be 19 % or stronger than wine!) could be the passage of time--blood level rises, then gradually falls.
Get a lawyer right away. Probably don’t need to be putting a lot of info on the web.