I don’t have it and I just got to Metchi town. Not in my Start menu.
You pick it up at the beginning of Shade Forest. Did you not grab any of the items?
go back to shade forest. its a blue color kinda item. you wont miss it.
Lol I’m surprised I missed it. Didn’t miss the Pokegear in the previous updates so no idea how this went by me lol.