I have 3 itchy red bite like bumps on left side of body.?

They itch for about 5 - 10 minutes straight at least once or twice a day. Just noticed they were there. Before I thought it was just an itch so didn't think anything about it. They don't hurt at all. Just itch. They are raised bumps but don't feel like there's anything in them like pus or whatever. They aren't severely red around the bumps either just a little redness. Feels like there a 3 smaller bumps clustered together to from each bigger bump but im not certain on that. Any ideas on what this could be would be greatly appreciated.