i recently got a road bike ( used to ride a mountain bike on pavement ) and now i have a pain in my left elbow.

it doesn't feel like a joint pain - more like a ligament pain. i think it has to do with me supporting my 230 pound body in a more horizontal position on the bike than on a mountain bike ?

also maybe it is because i don't wear sleeves and my elbow gets cold ? its about 65 degrees outside when i ride.

for the time being i'm going to start wearing something covering elbows to keep them warmer but any other ideas ? have you experienced this ?