Hey,
So, I have the exact same thing. For some reason everything kept killing me, checked the Damage log today and realized that for "one hit animation" everything hits 3 times....
Thing though, if it actually comes from a mod, the only ones I have in common with you are:
Animalcages & PrimitiveSurvival (I do use CarryCapacity but apparently you've run this one out right?)
Have you found out what the problem was by any chance?
Thanks!