I feel for you man! I'm 37 now and have been having major problems with anxiety and panic attacks since I was 19. I also tried to ignore it but that eventually lead to a couple of very serious attacks a few years back during covid lockdown.
Initially it was the same as yours in that it happened during the night with the same symptoms, however a couple of days after that I had one during the day that lasted around 14 hours. It was at least a week before I felt better after that one. The belief that you may be having a heart attack is the most terrifying thing I've ever experienced!
Following that period I eventually decided to get help and talked to my doctor for the first time in about 16 years. They starting me off with medication, which helped a lot in the short term. The real success I've had came when I decided to start therapy though. I had to wait a few months for an NHS therapist to become available as they have had a huge influx of people seeking therapy in the aftermath of the pandemic but eventually I got to the top the waiting list.
In short, it really helped me to understand what was going on with my body when these attacks were occurring and as I result I've had much more success in preventing them.