Nights with zero or >4 hrs of sleep?

I’ve been diagnosed for about three years I believe and honestly didn’t have issues that really really bothered me. The past month has been a nightmare, however

I’m suddenly dealing with adrenaline rushes. There seem to be more minor episodes then I’ve had three or four “major” episodes where my heart rate suddenly shoots way up without a trigger and I begin shaking uncontrollably. I have to immediately jump up, grab a cold compress for my chest and pace around gripping a pillow for several minutes to get things to calm down. The first time it happened I thought I was having a medical emergency

I’m coming off of one of an increasing number of sleepless nights or nights with no sleep at all. I slept about 45 mins Friday night and actually ended up going to the ER for slightly unrelated reasons Saturday night and didn’t sleep until 7am Sunday. I got three hours Sunday night and skipped class to try and recover and slept about 10 Monday night. Now I’m back to having gone an entire night without sleep thanks to getting a minor adrenaline rush or whatever it really is

I’d just like to sleep 🥲. These past four weeks have been a nightmare. I have an appointment with a cardiologist in May. I’m worried that I’ve gone downhill and will stay there. I went from being luckily fairly active and feeling mostly fine to this. I’m doing everything I’m supposed to as far as I know. It just feels so odd to have my body act in such a self-destructive way when I’m supposedly giving it what it needs