article_snippet: When I collapsed, my mum thought I'd tripped over,' Self-confessed fitness fanatic Karen MacLachlan said. '
article_snippet: 'Even was taken aback because doctors told me I should have been so unwell, it was really scary.
article_snippet: I could have died at any moment.'
article_snippet: I was scared to leave the house in case her heart stopped again.
article_snippet: The 25-year-old said: 'When I collapsed, my mum thought I'd tripped over.
article_snippet: It wasn't until my mum heard a deathly rattling sound coming from my chest that my mum called an ambulance' '
article_snippet: my mum now goes to the gym every day and takes the stairs everywhere
article_snippet: And my mum says my mum's glad my mum wasn't diagnosed any earlier. '
article_snippet: We really want to get people talking about heart conditions as We've nothing to be afraid of. '
article_snippet: Source: Medline Plus .