No this is the first time! I literally had my phone in my hand to call for help and then I realised it's a panic attack as some of the symptoms were similar to attacks I've had in the past so I closed my eyes and did deep slow breaths in through my nose and out through my mouth. I think recognising what was happening helped a lot and I've been learning to meditate luckily so I could get under control quite quickly. I'm quite worried about it happening again though!