Don't be a bonehead and go see a doctor that specializes in sports injuries. It's possible, not saying it's going to happen, but the trend that hear I you saying is that the knee(s) are only going to get worse especially with clicking going on. That clicking Running will make it worse faster, so either give it up or be prepared to see the doc about a knee job. To hear people moan on about how doctors are trying to pay off their student loans, or their new Maserati, or their 20,000 square foot home is just nonsense, sure some doctors may be like that especially plastic surgeons, but not all, and I've found most sports doctors to be pretty honest in their recommendations because most of them are in involved in sports too so they feel you. Once a sports doctor has a MRI done of your knees they can tell you how bad the situation is, it may be nothing more then him/her prescribing a routine of stretching and strength exercises, he may prescribe you a script to get some custom tennis shoes or inserts, and or do a biomechanics study of your knees if that's available in where you live.

You could try resting the knees for about 4 weeks and see if they're any better, but running would be the worse thing you can do to them after those 4 weeks are up, in fact if you want your knees to be around when you're 60's and 70's and beyond I would recommend that you stop running altogether. The other thing you could try is using a full float pedal on your bike, this will allow your knee to move and remove the stress off the joint. If you're boneheaded about running then I would get a pair of custom running shoes because your shoes could be causing some of your knee issues if they don't put your knee into proper alignment.

But I will guarantee you this, if you take no action due to fear, and really that's what you have...FEAR, whatever you're experiencing now will more than likely get worse. You might get lucky, and with rest, getting a bike fit, getting lucky in finding the right running and biking shoe, you could overcome this, but that's a lot of luck to try to risk it all on a set of knees you have to live with the rest of your life. Are you willing to play the slot machine betting that all knees come up and you win? if not you have to suffer the rest of your life and thus forgo any running or riding not to mention a life of pain and hobbled walking? Your choice, insert your money into the slot machine and give it a pull and see what comes up.

Just an opinion of course.