Right elbow joint hurts.

[Straight]

Over the last three days, my right elbow joint has been gradually hurting more and more. Any pressure will aggregate it. I am not sure of the cause, but some of the possibilities might be badminton, sailing, excessive use of my computer ect.

Anyone know what I can do to help it?

[Josiah7]

Bud could be 100 things, but unless I could examine it, there's no way I or anyone else is going to know. Since you do badminton and sailing, could be a soft tissue injury (Sprain) to one of the ligaments. Could be a grade 1 (Overstretch of the ligament) or if it is pretty bad a slight tear. Ice it; avoid heat, alcohol, running/excessive movement and massages for 72 hours. If it doesn't improve see your GP :)