diff --git a/1.4/Assemblies/RJW_Menstruation.dll b/1.4/Assemblies/RJW_Menstruation.dll
index cd6b170..762d712 100644
Binary files a/1.4/Assemblies/RJW_Menstruation.dll and b/1.4/Assemblies/RJW_Menstruation.dll differ
diff --git a/1.4/source/RJW_Menstruation/RJW_Menstruation/HediffComps/HediffComp_Breast.cs b/1.4/source/RJW_Menstruation/RJW_Menstruation/HediffComps/HediffComp_Breast.cs
index 5bb48b7..558031d 100644
--- a/1.4/source/RJW_Menstruation/RJW_Menstruation/HediffComps/HediffComp_Breast.cs
+++ b/1.4/source/RJW_Menstruation/RJW_Menstruation/HediffComps/HediffComp_Breast.cs
@@ -75,9 +75,6 @@ namespace RJW_Menstruation
 
                 if (babyHalfAge <= 0) babyHalfAge = 1.2f / 2; // Default to human
 
-                if (RJWPregnancySettings.phantasy_pregnancy)
-                    babyHalfAge /= GenDate.DaysPerYear;
-
                 return babyHalfAge;
             }
         }
@@ -140,10 +137,10 @@ namespace RJW_Menstruation
         {
             base.CompExposeData();
 
-            Scribe_Values.Look(ref ageOfLastBirth, "ageOfLastBirth", ageOfLastBirth, true);
+            Scribe_Values.Look(ref ageOfLastBirth, "ageOfLastBirth", -1);
             Scribe_Values.Look(ref maxBreastIncrement, "maxBreastIncrement", maxBreastIncrement, true);
-            Scribe_Values.Look(ref breastSizeIncreased, "breastSizeIncreased", breastSizeIncreased, true);
-            Scribe_Values.Look(ref nippleProgress, "nippleProgress", nippleProgress, true);
+            Scribe_Values.Look(ref breastSizeIncreased, "breastSizeIncreased", 0.0f);
+            Scribe_Values.Look(ref nippleProgress, "nippleProgress", 0.0f);
             Scribe_Values.Look(ref baseAlpha, "baseAlpha", baseAlpha, true);
             Scribe_Values.Look(ref baseAreola, "baseAreola", baseAreola, true);
             Scribe_Values.Look(ref baseNipple, "baseNipple", baseNipple, true);
@@ -199,19 +196,19 @@ namespace RJW_Menstruation
 
         protected long CalculateLastBirth()
         {
-            long youngestAge = (long)(BabyHalfAge * GenDate.TicksPerYear) * -2; // So a newborn isn't considered a new mother, either
+            long youngestAge = -1;
 
             if ((Pawn.relations == null)) return youngestAge;
 
-            List<Hediff_BasePregnancy> pregnancies = new List<Hediff_BasePregnancy>();
-            Pawn.health.hediffSet.GetHediffs(ref pregnancies);
+            List<Hediff_BasePregnancy> rjwPregnancies = new List<Hediff_BasePregnancy>();
+            Pawn.health.hediffSet.GetHediffs(ref rjwPregnancies);
 
             bool hasChild = Pawn.relations.Children.
-                Where(child => !pregnancies.Any(preg => preg.babies.Contains(child))). // no fetuses
+                Where(child => !rjwPregnancies.Any(preg => preg.babies.Contains(child))). // no fetuses
                 Where(child => child.GetMother() == Pawn).  // not Dad
                 TryMinBy(child => child.ageTracker.AgeBiologicalTicks, out Pawn youngest);
 
-            if (hasChild) youngestAge = Pawn.ageTracker.AgeBiologicalTicks - youngest.ageTracker.AgeBiologicalTicks;
+            if (hasChild) youngestAge = Math.Max(Pawn.ageTracker.AgeBiologicalTicks - youngest.ageTracker.AgeBiologicalTicks, -1);
 
             return youngestAge;
         }
@@ -224,7 +221,7 @@ namespace RJW_Menstruation
             {
                 maxBreastIncrement = Utility.RandGaussianLike(0.088f, 0.202f);
             }
-            if (ageOfLastBirth == 0)
+            if (ageOfLastBirth == 0 || ageOfLastBirth < -1)
             {
                 ageOfLastBirth = CalculateLastBirth();
             }
@@ -253,7 +250,7 @@ namespace RJW_Menstruation
                 debugGrowthStatus = "Base size (ageless)";
             }
             // The youngest child is less than halfway into babyhood: Full size
-            else if (ageOfLastBirth + BabyHalfAge * GenDate.TicksPerYear > Pawn.ageTracker.AgeBiologicalTicks)
+            else if (ageOfLastBirth > 0 && ageOfLastBirth + BabyHalfAge * GenDate.TicksPerYear > Pawn.ageTracker.AgeBiologicalTicks)
             {
                 debugGrowthStatus = "Full size due to young child";
                 if (breastSizeIncreased < MaxBreastIncrement)
@@ -299,7 +296,7 @@ namespace RJW_Menstruation
             float newNippleProgress;
             if (Pawn.ageTracker.BiologicalTicksPerTick <= 0f)
                 newNippleProgress = 0f;
-            else if (ageOfLastBirth + BabyHalfAge * GenDate.TicksPerYear > Pawn.ageTracker.AgeBiologicalTicks)
+            else if (ageOfLastBirth > 0 && ageOfLastBirth + BabyHalfAge * GenDate.TicksPerYear > Pawn.ageTracker.AgeBiologicalTicks)
                 newNippleProgress = 1f;
             else if (Pawn.IsRJWPregnant() || Pawn.IsBiotechPregnant())
                 newNippleProgress = nippleTransitions.Evaluate(Pawn.GetFarthestPregnancyProgress());