What causes heavy and painful arms at the joints and i now experience this on my legs especially when sitting in front of a pc even if its just for 30 mins. i've also noticed that my joints pop a lot and its painful.

There are many: possibilities for your symptoms. You will need to be evaluated, examined and have some laboratory testing to confirm a diagnosis. Make an appointment today.

Rheumatologist: Your symptoms are puzzling in that they seem to be positional and not present when you're up and about and more physically active. Are you sitting in front of a windy or drafty window, air conditioner or a fan when at the computer as these can produce similar symptoms? If symptoms persist or worsen consult a rheumatologist for evaluation and advice.