how to increase fertility?

[Crablord]

looking on the wiki all i could find were results for coc

 

[Woider]

Raskvel stuff increases fertility iirc.

 

[Dormane]

Their are a lot items that give a small fertility bonus, but I think your best bet would be Glowing White Eggs which can randomly be selected by helping Shelly or by birthing one by chance after taking Ovillium.

 

[SorenMageofMareth]

Pussyblossom does it IIRC