There are a range of tachycardia/arrythmia that you can have since birth that may not show up until you're older, or get triggered by certain meds or nutrient deficiencies (things like potassium).

I wouldn't ignore this for a minute longer. Maybe just walk into urgent care and ask if they're equipped to check it out (basically EKG). I know my urgent care is.

If they aren't equipped, then go to ER.

But please don't sit on this any longer. Some arrythmias are fairly benign, but if it's happening repeatedly, it will eventually cause tissue damage that you don't really fully recover from. Plus you don't know if yours is benign (and most docs would say arrythmia is never benign, even if it isn't killing you in the moment).

It comes down to what's open, how dangerous the condition is, and who was outfitted to do what.

If you're having legitimate trouble breathing like you are filling your lungs and it's not enough, or you can't get enough air in your lungs for any reason, straight to the ER.

Unknown irregular heartbeat or chest pain that doesn't go away with antacid, go to the ER.

Urgent cares near me generally have x-ray equipment. They're capable of a few stitches, they can handle prescriptions for emergent illness. If you walk in there with a f'dup heart rhythm or breathing problems they're going to call you an ambulance.

Scheduling something with your primary care is for all your other long-term needs. Preventative maintenance, blood tests, they can probably do an EKG and they should be the ones managing your long-term medications.

If you have something that feels urgent and the urgent care isn't open the ER is always an option.

I've kinda learned over time what is appropriate for what through personal experience or by listening to others. I also ask myself questions like can it wait a couple of days? Being in America I also ask myself is it worth going to the ER for this? Someone mentioned too that a lot of insurance companies now have nurses you can call for this sort of help.

If you genuinely think it's life threatening, go to the ER. If it's something that isn't life threatening but should be taken care of ASAP, then Urgent care is a good choice. Something like a broken bone, stitches. They have a lot of equipment. If they can't treat you or discover it's something worse they will send you to the ER.

I had an issue with heart palpitations a few year ago. I went to my primary care doctor and then went to a specialist. I think total it cost like 300$ or something. I was worried it was something worse yeah it turned out to be stress and anxiety. But the specialist did rule out any heart problems which included those scary ones where healthy people drop dead. That was worth the peace of mind. If I had gone to the urgent care they would have ruled out any immediate life threatening conditions and then have you follow up with your pcp or maybe get you to the specialist.

always the ER

the clinic in my area has no available appointments until several months out so it is the ER or hope your condition is something that can wait a long time before treatment

Possible heart stuff, always go to ER. Stuff of low concern like a mild rash that hangs around or mole you want checked out, go to clinic. Broken bones are ER. If you need stitches but don't think the cut is so crazy big and deep that it severed tendons or anything, urgent care can stitch you up.

When in doubt and you need something done quickly, just go to the ER. At the least you can ask the check in nurse if it's something urgent care can probably handle and if she says yes, just bail out and head that way. It's cheaper, and the ER is always filled with people who may need help that UC can't do.