Why does my shoulder make a cracking noise?

Ok so this happened a few days ago when I was doing this total upper body workout. I think it's because of the dumbbell side laterals that caused the top of my shoulder to make a cracking noise every time I rotate it, and I did a lot of reps plus I wasn't doing them right. Anyways, I was browsing through the net and this seems like a common injury. However, it seems like it's not going to heal on its own. When I rotate my shoulders it makes the cracking noise (can't describe it) it doesn't hurt though. My shoulders/arms were a little bit sore after the workout, but the soreness is subsiding and it's getting better, however, the cracking noise is not going away. I do plan on visiting a doctor, but can someone tell me if this is going to heal in a couple of days because I want to start playing basketball and other sports again, and I'm really worried. All answers appreciated thanks!