@georgia there's right-side chest pain, yes. Your left side is more noticeable because it has to beat more strongly, but the humble right side is working too. Other hearts:
1. the legs, which have naturally difficult veinous return against gravity. Called the second heart in Chinese medicine. The first place you'll see edema if you're having circulatory problems, even temporary ones like on a plane.
2. the lungs, another place that blood pools if the heart is having trouble keeping up. Gives you a bit of a cough. Stealthier than edema because you can get impaired circulation from something you did, but then easily attribute the cough to environmental factors like air or food allergies.
3. the back. Not something I've seen other people talk about, but I'm very suspicious of back problems.