Heart palpitations

I went swimming today by myself and found when i went to get changed i found my heart race and i could feel my pulse really strong in my neck which i do feel frequently when i exercise or get to warm etc. The changing rooms were warm but just wondering why this would occur. I didn't have any pain or anything like that just felt to hot and very aware of my flip flopping heart. After i got outside it all calmed down just find it a bizarre sensation anyone else suffer this? Or the strange beating neck i can see this in a mirror im 29 and lots of tests a few years ago all ok ecgs and an echo etc

Rapid temp change can do this. Especially when your heart rate is already up from exercise. Anxiety can also do this.

Anxiety. Gotta love it.

I meant to say it was fast but constant it only appeared to skip in the palpitation "episodes" it is so strange i don't have it all the time in fact more often than not i dont have it maybe its a subconscious worry about exercise

Hi Rachel. You just have a predisposition for palpitations in certain situations. I would get them from a hot bath which is why I stopped having baths.  I get them if I’m too warm still. It’s nothing to worry about.  A lot of people get palpitations after exercise and then they calm down when your heart recovers.  This would increase if you were warm likely.  Totally normal.