Sorry to be so very late getting back to you-- and especially with such bad news, because I don't know how to fix it.
Usually if a mod works for a while and then stops, it's because of a conflicting mod. Have you added anything else that affects pregnancy or abduction? Have you still got all the bits of your mod? Are your Sims young enough to get pregnant?
Re: Sims Aren't Being Impregnated After Abduction
Usually if a mod works for a while and then stops, it's because of a conflicting mod. Have you added anything else that affects pregnancy or abduction? Have you still got all the bits of your mod? Are your Sims young enough to get pregnant?