Spelunking

Swimming in my sorrows, I’m obliged, I fear, to share them.
My friends all shrink away and hide, hoping I will spare them.
But worries are a mother lode, and each of us a piner,
tunneling into all our woes like a trauma miner.
Then relating all of them in streams without a comma,
turning everyone we meet into a surrogate momma.

Prompt words for today are swim, oblige, sorrow, miner and comma.