Hi doctor i have sharp chest pain that last 3 seconds, i have done blood test, chest xray everything was normal. what could be

Not angina: It is not related to coronary symptoms. Possible cause muscular pain or just anxiety. Given your normal studies and your your clinical presentation your pain does not appear somthing serious.

It's electrifying --: That type of pain -- often times also described as burning, heat -- suggests a nerve irritation commonly transient or temporary, may be related to musculoskeletal strain or imbalance.