Your writing has a rather poetic undertone - perhaps your version of the creativity gift MI seems often to dole out? Continue to write. I find it sometimes helps with that ache. My journalling often starts with a vent but out of that chaos sometimes something more organized with clarity 'falls out'.

Feeling our emotions is not uncommon (Synesthesia is an extreme case of this). Negative emotions sometimes show up as physical pain and discomfort.

When this happens to me I will play hard ball with my physical aches. You may have seen my mention of the sensory strategy in anothr post. The checking in on the senses, "What do I see, hear, smell, touch." drawing your emotions from one feeling to others is usually helpful for me. I believe this is a form of 'mindfullness'. Some times I try to imagine something else is happening. Like, if my chest feels heavy, I imagine my dragonly fly perching upon it.

So yes, continue to write, but explore alternative 'feeling' to what you are experiencing.