A brain bleed would be very evident. The symptoms would not be temporary.

You passed out and ended up on the floor. I've done it a couple times due to getting up to quickly. Your violent coughing could have caused you to pass out. You would not remember anything during your unconscious state.

Don't try to make this into more than it is.

You treat the symptoms, not the diagnosis. You passed out. If you have any symptoms (other than no memory), treat them.