Begin tweaking Prom regen.

code/modules/mob/living/carbon/human/human_powers.dm

@@ -293,6 +293,7 @@
 		// Replace completely missing limbs.
 		for(var/limb_type in src.species.has_limbs)
 			var/obj/item/organ/external/E = src.organs_by_name[limb_type]
+
 			if(E && E.disfigured)
 				E.disfigured = 0
 			if(E && (E.is_stump() || (E.status & (ORGAN_DESTROYED|ORGAN_DEAD|ORGAN_MUTATED))))
@@ -305,6 +306,10 @@
 				var/obj/item/organ/O = new limb_path(src)
 				organ_data["descriptor"] = O.name
 				to_chat(src, "<span class='notice'>You feel a slithering sensation as your [O.name] reform.</span>")
+
+				var/agony_to_apply = round(0.66 * O.max_damage) // 60% of the limb's health is converted into pain
+				src.apply_damage(agony_to_apply, HALLOSS)
+
 		update_icons_body()
 		active_regen = FALSE
 	else

code/modules/mob/living/carbon/human/species/station/prometheans.dm

@@ -182,8 +182,12 @@ var/datum/species/shapeshifter/promethean/prometheans
 			nutrition_debt = H.getToxLoss()
 			H.adjustToxLoss(-heal_rate * starve_mod)
 			nutrition_cost += nutrition_debt - H.getToxLoss()
-			H.nutrition -= (2 * nutrition_cost) //Costs Nutrition when damage is being repaired, corresponding to the amount of damage being repaired.
+			H.nutrition -= (3 * nutrition_cost) //Costs Nutrition when damage is being repaired, corresponding to the amount of damage being repaired.
 			H.nutrition = max(0, H.nutrition) //Ensure it's not below 0.
+
+			var/agony_to_apply = ((1 / starve_mod) * nutrition_cost) //Regenerating damage causes minor pain over time. Small injures will be no issue, large ones will cause problems.
+			H.apply_damage(agony_to_apply, HALLOSS)
+
 	else
 		H.adjustToxLoss(2*heal_rate)	// Doubled because 0.5 is miniscule, and fire_stacks are capped in both directions