Severe health anxiety and PVCs help

(24m) the other I was laying in bed and felt a couple pounding/fluttering palpitations I had just got done walking around then just laid back in my bed and shortly afterwards I felt a couple heavy palpitations like Thump Thump Thump Thump it only lasted a few seconds but afterwards I felt this sudden strange feeling look at my Apple Watch it was 90 then went to 100-107 | got up and walked downstairs to shower like I normally do to calm down and felt like I couldn't breathe and felt lightheaded but once I was in the shower I started calm down and tell myself l've had palpitations that felt like how it felt before and then after the shower and kept telling myself that I felt like I could breathe again and my heart rate went back down to 80s-70s I've had yearly heart check ups and all my test have been normal I had heart surgery as a baby so I've always had PVCs and pacs but I'm worried what if last night was something serious and not just a regular pvc I've had in the past and l'll have a heart attack or sudden cardiac arrest or some serious arrthmiya I have severe health anxiety and ocd I was already anxious about my heart yesterday before it happened and I've had palpitations sometimes after walking around and walking up stairs to my bed and feeling them but I'm worried that it's something more serious. Any advice