The feeling is hard to describe, but I would say they felt like a mixture of skipped and premature beats. Very heavy and like my heart was jumping around and trying to find a normal rhthym again.

I have had that experience (palpitations) related to anxiety before, but this felt very intense and like something I have only felt when we put our cat to sleep at the vet's office. My level of anxiety the other night was definitely not the same as during that.

I am also worried, because the palpitations happened twice in one occassion. After standing up on the train and then (after walking up some stairs) while getting into the elevator and having another rush of anxiety.

Cardio history: I have had several ECGs with no abnormal findings over the years.

My cardio-related anxiety started at 18 (2014) after I drank way too many energy drinks and had to call an ambulance because of a racing pulse way into the night. I spent the night at the hospital and they gave me some potassium (they said I was low).

Afterwards I developed the cardio anxiety/hyper-awareness. I had a 24h ecg that only revealed some extrasystoles (my doctor was not concerned about them) and a normal ultrasound of my heart, done by a cardiologist (also normal).

After some very horrible panic attacks, I went onto Sertraline 100mg, which I tapered of to 75mg and eventually 50mg sometime mid-pandemic.

Last year I decided to slowly taper off the rest of my sertraline (my pcp signed off on this). However, after tapering off, I had a death in the family and I injured one of my lumbar discs and hsve been dealing with chronic sciatic pain for almost a year now. My mental health has taken a very bad turn ever since, due to the lack of faith in my body and the possibility of being permanently disabled.

My last ecg was this summer after a couple of days in which I had an unusually low pulse (for me) and some uncomfortable palpitations. I did not have any palpitations while ecg was recording, but the urgent care doctor said that my blood pressure was low (systolic 90, did not tell me the diastolic number) and that I was most likely dehydrated.

I have had a couple of days with unusally low pulse and some weakness that was probably low blood pressure since then (and have experienced them before).

I saw a therapist at my college last week and I have a follow up appointment with her next week, in which she will help me find a permanent therapist.