Fertility Mode
⚪ Last updated 2020⚠️ Install Order · 5 steps
Install in this order, then this mod last — most mods fail to load without their framework and dependencies in place.
Preview

🔍 Analysis
- 👍 1.4% endorsement rate — high engagement, a strong quality signal
- 🏆 #22 of 179 Immersion mods in this game by downloads
📋 About This Mod
Adds a menstrual cycle to the women of Skyrim for role play purposes. Tracked women proceed through the menstrual cycle and can become pregnant as well as give birth to babies and Hearthfire-compatible children.
Requirements
SkyUI SE (for MCM configuration)
Installation/Removal
To install, add the mod with your favorite mod manager (recommended), or drop the extracted contents of the archive to your Skyrim Special Edition Data folder. You may be prompted to overwrite UILIB, it is safe to do so.
To uninstall, remove the mod with your favorite mod manager (recommended), or delete the archive files from the Skyrim Special Edition Data folder. It is recommended to leave UILIB as removing it could break other mods that utilize the library.
Recommended Mods
For the best experience, the following additional mod(s) are recommended:
-
[]Flower Girls SE: Adds an immersive way to have sex in Skyrim. Fertility Mode is compatible with an optional patch.
[
]CBBE SE: A BodySlide supported body and clothing/armor are required for belly and breast scaling. - BodySlide SE: BodySlide is required for batch building morphs to be usable by Fertility Mode in-game.
How Does It Work?
When Fertility Mode is enabled, women encountered within Skyrim will be automatically tracked. Insemination can be achieved automatically with an MCM option, through additional mods such as Flower Girls or SexLab, or by using the debug MCM menu when the woman is selected in your crosshairs. Additionally, when married, sleeping with your spouse will also inseminate one or the other accordingly. Finally, debug/cheat spells are available from the MCM.
After being added to the tracking list, a woman is given a random day within the menstrual cycle. The cycles will be updated in game time (every hour by default), and when the end of the cycle is reached, it will start over back at the beginning. The cycle is partially realistic, with a menstruation phase, an ovulation phase, and a luteal phase.
There are four options for cycle length, in 7 day increments: 7 days, 14 days, 21 days, and 28 days (28 days is the default). Within that cycle, ovulation occurs on a set day, with fertility percentages arranged around the life span of sperm and egg. As an example, these are the four cycle designs where - is infertile, + is fertile, and ! is ovulation:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28
- - - - - + + + + !! ++ ++ -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21
- - - - - + + + + !! ++ ++ -- -- -- -- -- -- -- -- --
1 2 3 4 5 6 7 8 9 10 11 12 13 14
- - - - - + + + + !! ++ ++ -- --
1 2 3 4 5 6 7
- - + + ! + +[/
Fertility Mode adds a menstrual cycle to Skyrim's women for roleplay, allowing tracked NPCs to become pregnant and give birth to Hearthfire-compatible children. It's a niche immersion mod with strong community support (12,071 endorsements) and high download numbers, though it hasn't been updated since 2020.
✨ Key Features
📊 Pros & Cons
✅ Pros
- Huge community trust with 12,071 endorsements and nearly 900k downloads.
- Adds deep roleplay immersion for players who want realistic family dynamics.
- Integrates with Hearthfire, so your kids actually grow up in your homestead.
⚠️ Cons
- Last updated in 2020 — may have compatibility issues with the latest Skyrim versions.
- Requires careful mod management to avoid conflicts with other NPC or pregnancy mods.
- Not for everyone — the menstrual cycle mechanic can be off-putting or too complex for casual play.
For roleplay-focused Skyrim players who want to add realistic family life and generational storytelling. Skip if you prefer action-heavy gameplay or don't want to manage NPC cycles.
💡 Beginner Tips
- Use a mod manager like Vortex or MO2 to install and manage load order.
- Check for compatibility patches if you use other mods that alter NPC behavior or add pregnancy mechanics.
- Read the mod's documentation on the Nexus page for detailed settings and MCM options.
📊 Mod Details
- Game
- Skyrim Mods
- Author
- Narue
- Version
- 3.0.1
- Downloads
- 886,256
- Endorsements
- 12,071
- Category
- Immersion
- Created
- 10/22/2017
- Updated
- 8/9/2020
🔗 Required By 1 Mod
These mods list this mod as a dependency.
🧩 Commonly Used Together
Users add these mods to the same collections — a real compatibility signal, not an AI guess.
🔧 How to Install Skyrim Mods
Download from Nexus.
📖 Full step-by-step install guide for Skyrim →
Visit the official mod page for specific installation instructions for this mod.
🎮 Need cheat codes or console commands? Check ur gaming wiki for Skyrim commands, item IDs, and more.
Keep browsing — more Skyrim mods await