I am a 13 year old girl and this evening, out of nowhere I got this bad pain on my left side. It's sort of near my heart and ribs and it really hurts when I breathe in. Then, as I was going to bed, I took a deep breath in and heard this clear ticking noise like a watch. I realized I only heard it when I inhaled, so I think it's my heart beat. No matter how I sit or lay, the pain in my chest won't go away. Does anyone know what it is because I'm sort of scared?
Also, I've been feeling nauseous lately and my nose is stuffed up. That's probably unrelated but I want to make sure.
Thanks!