We know the preview said we could never expect the bombshell, but that won't stop us from tryingto figure out what it is. So here are five theories about what the bombshell could be.
Read spoilers at your own risk! For more on Wetpaint Entertainment's philosophy on spoilers, click here.
1. April is pregnant. The preview and this sneak peek suggest April (Sarah Drew) has a major pregnancy scare this week. Maybe in the last five minutes of the episode she confirms that she is, in fact, pregnant with Jackson's (Jesse Williams) kid. That plot is certainly ripe with potential. On the other hand, is it really something "no one could ever expect"? April and Jackson are two young, healthy people who keep having sex on a primetime soap. Pregnancy is always a risk in that situation.
2. April is sick. Sarah Drew has called this her favorite episode of the season so far, which suggests that it's very April heavy. Maybe the bombshell is that April's pregnancy scare is actually a sign of a serious medical problem. That would certainly be unexpected.
3. Meredith is pregnant. A spoiler lists Meredith (Ellen Pompeo) as one of 13 leads who could potentially get pregnant soon. Mer being pregnant would certainly be a surprise, though we don't think it would be a "bombshell" as much as a "blessing.”