I have some very clicky joints, especially in my knees, ankles and hips and have arthritis and a Vitamin D deficiency (think adult rickets) and hypermobility syndrome (I can move more than I should).
I'm only 30 and have had it for a while so might be worth keeping an eye on especially if there is any pain or swelling or other symptoms.
Keep your joints well hydrated, a good EPA supplement can help.
Decent magnesium supplements can be very good and swimming is good for suppleness without hammering the joints.
Make sure you warm up and down properly and maybe work up to exercises more gently at first.