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Might be fine.

Very slowly charge each cell - below .1C up to 3.45.

Goal should be each is just below 3.3V after resting at least an hour, get them all within .01V before putting together all on parallel

Now push them up together to 3.5V let them sit at rest in parallel, say overnight, disconnect and check each one, should be identically charged.

Use that as your baseline for load testing, down to 3V as your zero % SoC.

If they check out, balance again and then rebuild the bank.
 

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Should not be an issue with the very gentle C rate and those conservative voltages.

A little swelling is normal does not necessarily mean damage or mistreatment.

Are these soft pouch type or hard cased?

None of this applies if cylindricals
 
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