diff --git a/1.5/Defs/Drugs/Pills_Menstruation.xml b/1.5/Defs/Drugs/Pills_Menstruation.xml
index 9f65c17..e8077c0 100644
--- a/1.5/Defs/Drugs/Pills_Menstruation.xml
+++ b/1.5/Defs/Drugs/Pills_Menstruation.xml
@@ -91,6 +91,48 @@
 		</comps>
 	</ThingDef>
 	
+	<ThingDef ParentName="MakeableDrugPillBase">
+		<defName>Doublex</defName>
+		<label>doublex</label>
+		<description>Glittertech drug that causes fertilized eggs to produce enzygotic twins.</description>
+		<graphicData>
+			<texPath>Things/Item/SIA</texPath>
+			<graphicClass>Graphic_StackCount</graphicClass>
+		</graphicData>
+		<rotatable>false</rotatable>
+		<statBases>
+			<WorkToMake>800</WorkToMake>
+			<MarketValue>250</MarketValue>
+			<Mass>0.01</Mass>
+		</statBases>
+		<techLevel>Ultra</techLevel>
+		<ingestible>
+			<drugCategory>Medical</drugCategory>
+			<outcomeDoers>
+				<li Class="IngestionOutcomeDoer_GiveHediff">
+					<hediffDef>Hediff_Doublex</hediffDef>
+					<severity>1.0</severity>
+				</li>
+			</outcomeDoers>
+		</ingestible>
+		<recipeMaker>
+			<researchPrerequisite>DrugProduction</researchPrerequisite>
+			<recipeUsers>
+				<li>DrugLab</li>
+			</recipeUsers>
+		</recipeMaker>
+		<costList>
+			<MedicineUltratech>3</MedicineUltratech>
+			<Neutroamine>2</Neutroamine>
+		</costList>
+		<comps>
+			<li Class="CompProperties_Drug">
+			<addictiveness>0</addictiveness>
+			<listOrder>1000</listOrder>
+			</li>
+		</comps>
+	</ThingDef>
+	
 	<ThingDef ParentName="MakeableDrugPillBase">
 		<defName>PainReliever</defName>
 		<label>Pain reliever</label>
diff --git a/1.5/Defs/HediffDef/Hediffs_Menstruation.xml b/1.5/Defs/HediffDef/Hediffs_Menstruation.xml
index 7fe11f7..7da31c8 100644
--- a/1.5/Defs/HediffDef/Hediffs_Menstruation.xml
+++ b/1.5/Defs/HediffDef/Hediffs_Menstruation.xml
@@ -164,6 +164,32 @@
     </comps>
   </HediffDef>
   
+  	
+	<HediffDef Name="Hediff_Doublex">
+		<hediffClass>HediffWithComps</hediffClass>
+		<defName>Hediff_Doublex</defName>
+		<label>Doublex</label>
+		<labelNoun>doublex</labelNoun>
+		<description>Ultratech drug that causes fertilized eggs to split resulting in identical twins.</description>
+		<defaultLabelColor>(0.75,0.75,1.0)</defaultLabelColor>	
+		<isBad>false</isBad>
+		<tendable>false</tendable>
+		<makesSickThought>false</makesSickThought>
+		<makesAlert>false</makesAlert>	
+		<maxSeverity>5</maxSeverity>
+		<initialSeverity>1.0</initialSeverity>
+		<stages>
+			<li>
+				<becomeVisible>true</becomeVisible>
+			</li>
+		</stages>	
+		<comps>
+			<li Class="HediffCompProperties_SeverityPerDay">
+				<severityPerDay>-0.5</severityPerDay>
+			</li>
+		</comps>
+	</HediffDef>
+  
 	
 	<HediffDef Name="Hediff_PainReliever">
 		<hediffClass>HediffWithComps</hediffClass>
diff --git a/1.5/Defs/ThoughtDefs/Thoughts_sex.xml b/1.5/Defs/ThoughtDefs/Thoughts_sex.xml
index 0b0bf12..fdc7d55 100644
--- a/1.5/Defs/ThoughtDefs/Thoughts_sex.xml
+++ b/1.5/Defs/ThoughtDefs/Thoughts_sex.xml
@@ -321,7 +321,7 @@
     <stages>
       <li>
         <label>{0} came inside</label>
-        <description>I hope this makes me pregnant like should be.</description>
+        <description>I hope this makes me pregnant like I should be.</description>
         <baseMoodEffect>15</baseMoodEffect>
         <baseOpinionOffset>10</baseOpinionOffset>
       </li>
diff --git a/1.5/source/RJW_Menstruation/RJW_Menstruation/Hediff_MultiplePregnancy.cs b/1.5/source/RJW_Menstruation/RJW_Menstruation/Hediff_MultiplePregnancy.cs
index e8d6939..a65f73a 100644
--- a/1.5/source/RJW_Menstruation/RJW_Menstruation/Hediff_MultiplePregnancy.cs
+++ b/1.5/source/RJW_Menstruation/RJW_Menstruation/Hediff_MultiplePregnancy.cs
@@ -320,7 +320,20 @@ namespace RJW_Menstruation
             Pawn firstbaby = null;
             int traitSeed = Rand.Int;
             List<Trait> parentTraits = GetInheritableTraits(mother, father);
-            while (Rand.Chance(Configurations.EnzygoticTwinsChance) && division < Configurations.MaxEnzygoticTwins) division++;
+
+            //TODO: turn this into a proper function that can handle genes, fertility boosts, genital type effects etc.
+            float eTwinChance = Configurations.EnzygoticTwinsChance;
+            //Log.Message($"RJW_Menstration :: Configurations.EnzygoticTwinsChance = {Configurations.EnzygoticTwinsChance}");
+            if (mother.health.hediffSet.HasHediff(VariousDefOf.Hediff_Doublex))
+            {
+                division++;
+                eTwinChance = eTwinChance + (1 - eTwinChance) / 4;
+            }
+
+            //Log.Message($"RJW_Menstration :: TwinChance = {eTwinChance}");
+            while (Rand.Chance(eTwinChance) && division < Configurations.MaxEnzygoticTwins) division++;
+            //Log.Message($"RJW_Menstration :: division = {division}");
+
             for (int i = 0; i < division; i++)
             {
                 Pawn baby = GenerateBaby(request, mother, father, parentTraits, traitSeed);
diff --git a/1.5/source/RJW_Menstruation/RJW_Menstruation/VariousDefOf.cs b/1.5/source/RJW_Menstruation/RJW_Menstruation/VariousDefOf.cs
index 997db3c..7884cde 100644
--- a/1.5/source/RJW_Menstruation/RJW_Menstruation/VariousDefOf.cs
+++ b/1.5/source/RJW_Menstruation/RJW_Menstruation/VariousDefOf.cs
@@ -22,6 +22,7 @@ namespace RJW_Menstruation
         public static readonly HediffDef Hediff_Estrus_Concealed = DefDatabase<HediffDef>.GetNamed("Hediff_Estrus_Concealed");
         public static readonly HediffDef Hediff_AffectedByPheromones = DefDatabase<HediffDef>.GetNamed("Hediff_AffectedByPheromones");
         public static readonly HediffDef Hediff_ASA = DefDatabase<HediffDef>.GetNamed("Hediff_ASA");
+        public static readonly HediffDef Hediff_Doublex = DefDatabase<HediffDef>.GetNamed("Hediff_Doublex");
         public static readonly StatDef MaxAbsorbable = DefDatabase<StatDef>.GetNamed("MaxAbsorbable");
         public static readonly NeedDef SexNeed = DefDatabase<NeedDef>.GetNamed("Sex");
         public static readonly JobDef VaginaWashing = DefDatabase<JobDef>.GetNamed("VaginaWashing");