Hello. Please can you tell what your profession is? Does it involve manual work? Any previous history of trauma to hand/wrist/elbow/shoulder/neck? Do you have any numbness in the hand? At 36, the likely causes for your symptoms may include either a systemic illness (e.g. early inflammatory arthritis- therefore family history important) or a nerve compression (carpal or cubital tunnel syndrome- this should however cause pins & needles in hand with pain affecting certain digits). Sometimes this could be due to a neck problem (do you have neck pain?).
Next Steps
Initially I would recommend seeing a hand specialist or orthopaedic surgeon for detailed assessment. However, please do not worry as it doesn't sound very serious.