I should clarify that a 120 pulse isn't dangerous; it's about the same as a healthy person jogging, just not something that should be happening from sitting down in a waiting room for twenty minutes. So I was never in danger and I don't want to put anyone off getting vaccinated. I had an adrenaline rush and rapid pulse problably over 120, which then took a few hours to calm down. It was alarming and worth getting me to hospital because that's not listed as a side-effect and could have been the start of something worse, but... it wasn't. I spent the next day sleeping a lot and feeling rough but was okay by midnight and I'm completely fine today other than a slightly sore shoulder and a slightly sore inner elbow from having a cannula* shoved into a vein in case it was needed.It cleared up on its own in the end and I'm back home! Thank goodness.
I started getting brain fog and fatigue within minutes rather than later in the day and after half an hour had to get the bus home. After I'd eaten (an hour after the shot), which due to my usual problem usually makes me really tired, I had an adrenaline rush and my heart started racing, which lasted for hours. My pulse was measured at 120 (should have been less than 90). A couple of hours later it was down to 100, then a bit later heart was normal (though still on the high side). Blood test results all normal. I still have brain fog though and I'm a bit achy.
They were confused, as they have no information on this as a possible side effect. I guess I'm a mutant!
On the upside, I've been worried ever since I had Covid, and moreso after I had it again, about hidden damage and I've now had a proper medical with ECG and blood tests and... I'm fine!
I think this may have been related to my ongoing condition, which remains a mystery (the doctor at the hospital was baffled by it), but I had a brief episode of tachycardia** a few years back, which was put down to an anxiety attack/ excitement at the time as it only lasted an hour, but perhaps I'm prone to it and the vaccine triggered an unusually intense episode. (Though still not dangerous.)
I'm so well that I stayed up untill 4am last night then got woken up less than five hours later by my phone and a total stranger asking 'Are you [my name]' and then after I'd checked and confirmed that I was me, 'Are you alright?'*** and I dealt with that just fine then carried on with a busy day.
So, don't let me put you off getting a jab. I have the second scheduled and will go. Covid was a nightmare and I spent a whole year with problems from that (and my sense of smell is still not quite there yet), while this was a little drama done and dusted in two days. No contest.
My mum had hers too, on Monday and she is also well, having had no effects at all.
Honestly! My poor old mother having to worry about her frail young son!
*Those spikes with a valve which IV tubes are attached to. I HATE them!
** Abnormally high pulse
*** There are worse ways to be woken up than a strange woman asking if I'm okay, but it was a little confusing. It wasn't even about my hospital visit, just a coincidence!
As a side note, my usual health problem means that after eating I usually lose four hours of the day feeling awful and aften having to sleep or at least lie down, but the adrenaline rush and sped up heart rate overrode that, so this all happened while I would have been doing that. I traded lying in bed for a walk through pleasant trees to the hospital and had a conversation with an off duty nurse when I could have been incapacitated. So I lost nothing and actually gained something despite the worry.