The mother of a 4-year-old boy shot dead in a Bronx playground last summer is making peace with the idea of a new little love of her life: a newborn daughter.

Shianne Morgan didn't know she was pregnant last July when her son, Lloyd Morgan, was struck in the head by a stray bullet from a gun battle in a Bronx park.

"I see a figure laying down on the floor, and I hopped the gate and he was there... already -- already on his way out, I guess," Morgan recalled in tears.

Just a few weeks later, Morgan got the surprise of her life: She was pregnant -- and suddenly scared. She was still in pain over the loss of her only son.

"He was gone before school. He was gone before first teeth coming out. He was gone before he learned to say a sentence correctly," said Morgan. "Babies aren't supposed to die. Babies aren't supposed to be murdered."

Still mourning Lloyd, Morgan described her pregnancy as "very bittersweet."

It wasn't until Lauren was born and in her arms last Tuesday that Morgan felt she could start overcoming her grief. She said she felt Lloyd was there with her in the delivery room.

"I remember literally thinking that I know my son is around me because I'm too happy," she said. "This is a very happy moment for me, and I know he's looking down on me, telling me it's OK to be happy."

Three men were arrested and charged with Lloyd's death.

Morgan is now on a new mission to speak out against gun violence.

This Saturday -- the day before Mother's Day -- she'll join other grieving mothers in the March Against Gun Violence. The group will walk from East 138th Street and Brook Avenue in the Bronx to the People's Park on East 141st Street.

"It's not worth it at the end of the day," she said. "It's not worth putting somebody's parent through this. It's not worth getting caught, and doing time and losing your life."

In the meantime, Morgan will be teaching little Lauren all about her big brother.

"I want her to know that he was a great kid," she said. "And he would've been a great big brother."