bumps on right hip?

I noticed monday that Jericho had a small bump (about the size of a pea) on his right hip area, I moved his fur around but couldnt see anything, which makes me think its under his skin and not a bug bite or something. He doesnt mind when I touch it, but the next night I noticed that there was another one right next to it.
He got his shots last week for everything, and I was wondering if it could be from that and to just keep an eye on it, or should I take him to the vet and make sure its not a small tumor or cyst?

Im really worried about him

Give your vet a quick ring describe what you can feel and ask his opinion there's no harm in asking it might just be like you say from his vaccines also from play with another cat

Considering what he's been through, no wonder you're worried. I'd take him in to have your vet look at him. Just to be sure it's nothing.

Robin

hes getting neutered on friday, and the surgeon called me back to verify everything and i asked her about it and she said it could just be from his shots and to just keep an eye on it...so i guess i will do that and if there are any changes by then ill let her know.