My son and his wife asked me to watch their two-month-old baby while they went shopping. But no matter how I held him or tried to calm him, he kept crying uncontrollably. I immediately sensed something was wrong. When I lifted his clothes to check his diaper… I froze. There was something there… something unimaginable. My hands started shaking. I grabbed him and rushed straight to the hospital.

I kept glancing at him in the rearview mirror so often I was lucky I didn’t put us all into a ditch. His tiny face was red and shiny with tears, his fists clenched, his legs kicking hard against the straps. Between cries he sucked in broken little breaths that made me grip the steering wheel tighter.

“Hold on, sweetheart,” I whispered, though my own voice shook. “Hold on. Grandma’s getting help. Hold on.”

The bruise had been there under his onesie like a stain blooming where no stain had any right to be.

That was the image that kept replaying behind my eyes each time I blinked.

I had been changing him on the couch because Daniel and Megan’s nursery was a wreck of burp cloths and open drawers and all the things new parents tell themselves they’ll organize later, after they sleep, after the baby settles, after life stops feeling like a series of alarms. Noah had already been fussier than usual when I arrived that afternoon. Megan had blamed gas. Daniel had blamed overstimulation. I had blamed nothing aloud because two-month-old babies are tiny mysteries, and every adult around them is always guessing.

Then I opened his diaper, lifted his little legs, and he screamed so hard his whole body arched. Instinct made me pause. Experience made me look. And there, on the soft skin of his stomach, just above the diaper line, was a darkening bruise the size of two quarters pressed side by side.

For one second I had simply stared.

Then I picked him up, called his name even though he was two months old and my saying “Noah” could not possibly have changed the fact of pain, and something old and cold moved through me.

Because babies that young do not get bruises by accident. Not really. Not on their bellies.

I did not think in words right away. I moved. Diaper bag. Blanket. Car seat. Keys. Purse. Out the door. I shouted something into the hallway toward Megan, who had just stepped into the shower to wash the spit-up off her shirt, but I don’t think she even heard me over the water. Or if she did, she probably thought I was just stepping outside with him the way I sometimes did when he got fussy.

By the time I reached the hospital, I had rehearsed and rejected twelve possible explanations.

Maybe he had been pinched by a diaper tab.

Maybe some absurd blood-vessel thing was happening under the skin.

Maybe I was overreacting.

Maybe I was seeing a bruise because my mind had already decided there must be one.

Then he cried again from the back seat, a thin, broken wail that seemed too big for such a small body, and I knew none of those comforting lies would survive contact with a doctor.

I didn’t bother parking properly. I left the car half crooked in front of the emergency entrance, grabbed the diaper bag and unbuckled the car seat so fast I nearly jammed the release. Noah’s face crumpled harder the moment I lifted him, and he let out a sound that made the nurse at the front desk stand before I had even reached her.

“What’s wrong?”

“My grandson,” I said, breathless and half out of my mind. “He won’t stop crying and I found a bruise on him. He’s only two months old.”

Something in her face sharpened immediately.

“Come with me.”