Im a bodybuilder and i suffer from shoulder pain and the dr told me i have infection in my ligaments. he gave some med. but how much should i rest ?

Whoa: It's unlikely there in infection in your ligaments and/or tendon and/or joint capsule, and it is highly probably they are inflamed instead. If you've left your physician's office not knowing the dose of the anti-inflammatory medicine, call back. More important is learning how to lift scientifically so the inflammation stops. Very glad you're doing this and are fit, best wishes.