If there even is such a thing 
I collapsed earlier in the week, no stress at that moment, just maybe skipped up the last few steps a bit faster than my body likes these days. Severe pain in my left arm, running into my upper left back & a tearing pain under my arm into the upper middle of my chest. Though the chest pain was quite mild, not what I would expect from a heart attack at all.
I wasn't sure what to make of it, I felt an overwhelming fear & nauseous too, but it still just seemed a bit melodramatic to be thinking if ringing 999. I took myself off into the spare room to sit it out as I didn't want to frighten DD, who was in with DH watching TV (she's is already ill & suffering with anxiety)
The feeling of fear & pain in my arm & back grew, plus clammy & blue lips, so I checked the NHS site for symptoms & it said to ring 999 immediately, I still felt like a drama queen & I'm used to health problems, do rang 111, sort of hoping they would tell me it was nothing to worry about.
Whilst talking to them I was getting worse & had to call DH to help as I was losing the use of my left arm, my grip completely went - paramedics were here before DH could even get me downstairs, they hooked me up & after heart checks I was blue lighted to A&E as they thought I was heaving a heart attack. They kept me in over night & ran a ton of tests. I insisted on going on my own as I was worrying about stressing DD, but I was so ill that I realise I didn't take everything in properly- my BP was so high, so was my heart rate, though I do have POTs.
Thankfully all heart scans came back as no blockages are damage, they said they didn't really know what had happened, though they though I had probably had a muscle spasm in the artery leading to the heart which had temporarily blocked it, but thankfully hadn't caused damage.
My BP was still crazy though highest was 273/159
) & they wouldn't let me out until it was under 200, I noticed it dropped a lot when I got myself up & used a walker to get to the water machine & drank a litre+ of water to flush out the dye from the scan & I had a gut feeling it might help. Breathing exercises helped further.
They let me come home at lunch time the following day, but with BP drugs to take & I pretty much slept for 3 days, thankfully DH has been around to take care of DD.
I still feel like I was hit by a truck, my chest & arm are still sore & I am just so weak & shaky, but I feel very, very lucky.
But here I am bolt upright awake again, with my mind & heart racing ten to the dozen & I just don't know & though I am coping, if I am truly honest, not having a proper answer, scares me. Though I'm beginning to think that the drug the hospital have given me to take, could be causing these middle of the night panicky feelings.
Was this a heart attack of sorts
TIA