Warning: This article contains spoilers for Grey's Anatomy Season 9, Episode 18: "Idle Hands."

Have you been wondering if Meredith (Ellen Pompeo) and Derek's (Patrick Dempsey) baby is a boy or a girl? Us too! Fortunately Grey's Anatomy Season 9, Episode 18: "Idle Hands" finally gave us the answer.

Meredith spent most of the episode worrying about her baby (well, and discovering a patient has incurable cancer, but we're going to focus on the baby part). She became convinced something was wrong with it. Not anything in particular, mind you — just something. Anything. Everything. One of the problems with being a doctor is that you're hyper-aware of everything that could go wrong.

Fortunately, Derek swept in near the end of the episode and convinced her they should use all of their medical knowledge to take a look at their baby. Not only did the baby look a-okay, but now we know its sex, too.

So, will it be a boy or a girl?

A boy!

Are you happy? Share your thoughts in the comments below!

For more Grey’s spoilers, click here.

Catch the next new episode of Grey’s Anatomy on Thursday, March 28, 2013, at 9 p.m. ET/PT on ABC.