unpatching vanilla pregnancy

Source/HarmonyInit.cs

@@ -1,6 +1,7 @@
 using Verse;
 using HarmonyLib;
 using System;
+using rjw;
 
 namespace RJW_Genes
 {
@@ -10,12 +11,17 @@ namespace RJW_Genes
         static HarmonyInit()
         {
             Harmony harmony = new Harmony("rjw_genes");
+
+            var original = typeof(Hediff_Pregnant).GetMethod("Tick");
+            harmony.Unpatch(original, HarmonyPatchType.Prefix, "rjw");
+
             harmony.PatchAll();
+            
 
             // Patch Licentia, if Licentia exists
             // Logic & Explanation taken from https://rimworldwiki.com/wiki/Modding_Tutorials/Compatibility_with_DLLs
             // Adjusted to use ModsConfig (which makes it work, the example above does not run out of the box)
-           
+
         }
     }
 }