Heart palpitations for 3 days

30/m. Another person panicking and hoping for some advice or idek. I’m not an anxious person, but in the past few days I have become more than qualified to post in this subreddit.

I’ve been having heart palpitations for 3 days now. I’ll get a quick one pop up every minute or so for a few hours. They may dissipate for 30 mins or so, but they always come back. I’ve had them before, but it’s either like 1/2 and I won’t feel them again for weeks, or it’s straight after running when I’ve pushed it too hard and I get a fair few in a short time then it stops.

I’ve called the doctors and they want me to come in for bloods and an ECG (including giving me one of those 24 hour ones) - they can’t fit me in until the 17th.

Is this way too long? I need some reassurance I’ll be okay. They feel scary and despite lots of reading on here, it’s impossible not to worry about something that’s gone wrong with the #1 thing that keeps me alive.

Thanks in advance for replies x