Blood pressure spikes: Is this "Normal"?

I do not currently have any heart associated diagnosis. I suspect I have Lyme as nothing else is really explaining all of my symptoms, but also, undiagnosed.

My BP is usually 90/70 and under, but occasionally will get up to 120/90, I've never seen it go over that but I only just got the BP cuff. I recently got a smart watch because I felt like I have palpitations. When I listen with a stethoscope it sounds fine if not a bit inconsistent rhythm wise but I suspect it's the normal inconsistencies (it goes up when swallowing and breathing in)

My watch shows frequent spiking from 60-150 throughout the day, and sometimes the stress function will beep and tell me to relax even though everything else seems fine measurement wise, but often when it does that I find myself feeling very cruddy very soon, and usually wind up laying down or falling sleep on the floor (that's just sorta where I sit every day, so it's not weird that I'm down there)
It will often dip below 50bpm when I'm still awake, and usually that's when I feel crappiest OR getting ready for bed. I can understand it when I'm in bed or asleep but not when I'm still awake and doing things.

When I stand, it ALWAYS jumps up by 50bpm, I usually go from my resting 60-78 to 125-140, and I get extremely lightheaded when that occurs. Often I stay up and try to ride it out but I usually wind up losing my vision and sense of hearing. On the worst occasions I can think of I had to drop to bed for a good few minutes while everything came back, but usually all I have to do is hang my head upside down for a few secs and it comes back way quicker.

When I shower, my feet turn purple and if I bring them up to shoulder height I can physically watch as the blood drains from it and it returns to normal color. And generally when that happens I find myself realizing I felt cruddy and didn't even notice until it was drained back in and I felt better.

What is mildly concerning me at the moment is that starting a few days ago, I had a consistent pain in the left side of my chest, which lasted for two days and didn't seem affected by food considering I woke up with it. Since that day my watch has been showing absolutely absurd fluctuations that, as far as I'm aware, are out of character for myself, and I have not been feeling good at all. No appetite whatsoever and just feeling really tired and easily anxious.

Last night was extremely rough for absolutely no reason, I have chronic sinus inflammation and yesterday it just would not budge no matter how much (horrible) nose spray I used, I literally cannot tell at all if I was just getting myself worked up over that or what but my heart was freakin going at it all night. It just felt like absolute crap, queasy, palpitations, anxiety, cold as all hell, and a weird doom feeling. BUT those are literally all symptoms of a panic attack, and also all of my readings were borderline spotless. Like that was actually the first time I got a reading of 120/90, and hr wise, I don't really feel like 148 isn't really that concerning?

I'm not exactly a healthy individual but I struggle substantially to get a diagnosis to explain why so many organ systems are affected, and thats why I suspect Lyme (that and a bullseye rash a year before symptom onset)
I have SMAS and no thyroid, and have been in Ketosis since November because fruit and carbs obliterate my stomach and make me wish I was never born.
But I mask so incredibly well when I feel horrible/pain that most doctors seem to struggle to believe when I say my symptoms are as bad as they are, I think they believe I'm exaggerating, but I'm just autistic and I mask everything, especially when I'm in a situation where I'm being directly observed. Like I said, I usually even walk off almost blacking out just to avoid drawing any attention to myself, I absolutely loath the idea that somebody might ask me if I need help, I want to be 1000% independent. To heck, I had a cyst extraction two weeks ago that was nearly golf ball sized and blatantly refused any pain medication, I'm so sick of being accused of only going to the doctor for drugs it actually ruined my day that they even offered them.

But because of all this I have an extreme aversion to doing to doctors anymore because of how much I've been dismissed and told I'm just lying or want attention in the past few years. So as one can imagine, I'd really rather have some evidence that what I'm experiencing isn't just weird hormone stuff I can ignore/will be dismissed for anyway before wasting money I really don't have a lot of.

So based on all that... Is this worth going to an urgent care over? I don't have a cardiologist or a GP that thinks I need one.