Personally, I'd say that's a little bit too much. Unless the girl is actively flirting and making plans with these other friends, I wouldn't worry about it. I have a lot of guy friends who I talk to, but most of the time it doesn't mean anything more than just friends. So yeah, I don't think that you should worry about this right now. I mean it's normal to be jealous and a bit bothered, but I don't think that it should be something your mind is consumed about all the time. Best of luck!