Yes Vampire Sims can become pregnant in The Sims 3. In fact vampirism is genetic in sims 3.
eg: Sim+Vampire= Sim/Sim/Vampire/Vampire
Sim+Sim=Sim
Vampire+Vampire=Vampire
Chat with our AI personalities
The same way any two sims can marry in the Sims 3
No
Can't, unfortunately
They are 3-4 sim days long.
If you are talking about being pregnant while in the university, then the answer would be a no. However, if you are talking about being pregnant at your hometown (Sunset Valley, Twinbrook etc), then your sims can get pregnant.