Whatever you do, don't take it lightly. One of my former bridesmaids was diagnosed with it and was being treated. The doctor said she was improving very well and she went home from his office and gardened for awhile and cooked dinner.
Later during the night, she got up to go to the bathroom. Her husband found her body there the next morning.
The autopsy revealed that when she stood up after using the toilet, all the fluid in her lungs somehow crushed her heart immediately.
She left behind 3 young children.