diff --git a/1.3/source/RJW_Menstruation/RJW_Menstruation/HediffComps/HediffComp_Menstruation.cs b/1.3/source/RJW_Menstruation/RJW_Menstruation/HediffComps/HediffComp_Menstruation.cs
index ad93d99..d032122 100644
--- a/1.3/source/RJW_Menstruation/RJW_Menstruation/HediffComps/HediffComp_Menstruation.cs
+++ b/1.3/source/RJW_Menstruation/RJW_Menstruation/HediffComps/HediffComp_Menstruation.cs
@@ -1509,7 +1509,7 @@ namespace RJW_Menstruation
                 Implant();
             }
 
-            if (Pawn.health.hediffSet.hediffs.Contains(pregnancy))
+            if (pregnancy != null && Pawn.health.hediffSet.hediffs.Contains(pregnancy))
             {
                 curStageHrs += 1;
                 StayCurrentStageConst(Stage.Pregnant);