my anxiety has been reasonably under control recently apart from the odd wobble with the covid talk, met my friends 3 times in 1 week abroad, then the day i was flying home she suffered a massive heart attack and lost the power of speech etc etc then passed on that night.

since returning home i was ok but yesterday all my panic started again , fearing im short of breath (when im not really) and waking suddenly thinking im suffering a heart attack, last ECG was dec and feb and both were all clear, im 45 smoker & like a drink

is this likely to just be a coincidence as my friends passing is so fresh in my mind and she was 15 years older than me

thanks in advance