Sqad has accused me of scaremongering on more than one occasion before now. I certainly don't want to do that but I will relate a true story to you and leave it entirely to you to decide as to whether:
(a) it's relevant ; and
(b) you want to do anything about it.
Back in my teaching days I was in charge of first aid in the school. During a staff meeting a colleague said that she felt unwell and went outside, accompanied by another colleague. (Nobody was greatly surprised as the room was hot and oppressive). A few minutes later however I got called outside as the lady had fainted. (She was a fit and apparently healthy PE teacher). She was 'out' far longer than I would have expected for a 'normal' faint and I was considering calling an ambulance when she came round and seemed to be OK. She insisted upon driving herself home (although someone followed behind in their own car, in case she felt unwell again).
The following morning she came to school as normal but, before I'd arrived at school she had another 'long faint' in the staffroom and her friends insisted upon taking her to hospital (despite her protests to the contrary).
The A&E staff didn't seem too concerned but carried out a few tests, including one on her blood hormone levels. She was left sitting in the waiting room until suddenly a group of nurses arrived and rushed her into intensive care because the tests had shown that she'd actually had two heart attacks.
So that's why I get a bit concerned when I hear about 'long faints'.