Stiles was completely sure, without a single strand of doubt that Derek hated him. But that seemingly wasn't the case as one night Derek couldn't resist the urge to mate Stiles. But now after that one night something is off about Stiles, as he's become more and more distant from the alpha and is unexplainably going through one hell of a change. (Not related to I only want you, it's a different fanfic that I felt the urge to write).

One night, just one and now Stiles and Derek must deal with the consequences. Stiles ends up becoming pregnant and they both decide it's best kept a secret until Stiles is ready to announce their unborn child to their family. But keeping this secret is a lot harder then Stiles thought and his life is turned completely upside down.

Stiles hates condom. He wants Derek to fill him everytime they...you know. Stiles loves the sensation. Derek is a werewolf anyway, what disease he could possibly have? His mate needs to relax. Besides, it's not like Stiles can get PREGNANT. (Guess again)