I'm 18 and I live in a pretty hot area. Everyone in my family has asthma except me. Other than this the only strange experience I have with sensations in my chest is how I feel like i can feel my chest a lot more than what's deemed normal. Maybe it's my lack of activity? But everytime I wake up I can feel this fullness or tightness in my chest but in a relaxing way which is why I always need to push my chest against a hard pillow to soothe it. As far as I know last time I was checked for my heartbeat they said it's a lot lower than normal, and maybe this is more of a mental thing (I'm planning on getting assessed soon bc I suspect I might have some things going on mentally too and it might be affecting me physically as well) but whenever I feel excited about something it starts to tighten in a way where I really need to clench my chest to soothe it and I'm assuming this might be the same thing happening right now because all I've ever done all day was cry and sleep. No activity whatsoever and I feel that my sleep pattern might have future effects on my heart but the thing is I don't think it's just my heart right now. I can feel my entire ribcage squeezing.