Tri-color guinea pig with blue harness

I lost my guinea pig, a little tri-color guy named Nibbles, yesterday around 6:15pm near the Chickamauga Battlefield visitor center on Battlefield Parkway in Fort Oglethorpe. He’s small—about the size of a tennis ball—with brown, black, and white fur and a distinctive white heart-shaped patch on his chest. I had him in a light blue harness when we were out in the yard, but I think he slipped away while I wasn’t looking. He’s pretty shy but incredibly gentle, and this little guy means the world to me; I really need him back. If you spot a tiny guinea pig wandering around the Chickamauga area, please message me here or text my number; I’ll head right over. I’m in Northwest GA and would be grateful for any help in bringing him home.