BHF advises if the feeling continues, and you haven’t previously been diagnosed with heart problems, to call NHS 111.
But if you experience other signs of heart disease it says it may be safer to call an ambulance.
Another sign of heart disease listed by Professor Newby is swollen ankles.
He said: “This shouldn’t be ignored, especially if the ankles get really big, as it can be a marker of heart failure, but it is also very common and has lots of other causes.
“It could just as easily be from tablets you are taking – for example, blood pressure medication can lead to swollen ankles.”
Feeling tired all the time could also signal problems with the heart, as well as other conditions.
Professor Newby said: “Many of my patients tell me they’re tired, whether they’ve got heart failure or not, whether they’ve got angina or not!
“It’s a difficult one, because it’s so non-specific.”
The health body advises: “It’s important to know that not everyone experiences severe chest pain.
“This is particularly the case with many women. The pain can often be mild and mistaken for indigestion.
“It’s the combination of symptoms that’s important in determining whether a person is having a heart attack and not the severity of chest pain.”
If you suspect a heart attack you should call 999 immediately and ask for an ambulance.
The NHS also advises: “While waiting for an ambulance, it may help to chew and then swallow a tablet of aspirin (ideally 300mg), as long as the person having a heart attack is not allergic to aspirin.
“Aspirin helps to thin the blood and improves blood flow to the heart.”