Severe sudden chest pain no prior injury

Hello. I'm a 25 year old male (non-smoker, non-alcoholic, vegetarian), experiencing tight crushing pain & pressure in my chest, mainly in left side & center, also just below my ribs, and upper left half of body. While lying down I cannot turn on my left side at all it's too painful, taking deep breaths or yawns also pains. Neck also gets cramped.Can't function, sleep or work coz of the intensity of the pain. As per medical advice, I did a health checkup at a reputed hospital includg ECG, chest X-ray, urine & lipid profile, cbc etc. chest xray report normal (unexpected). In urine analysis: excess rbcs, ketone and pus. urine had red color. In Ecg, sinus tachycardia arrhythmia was the finding. Resting Heartbeat of 108-110, feels pressureful. Lipid profile shows slightly high LDL levels and lower than normal HDL levels. Now after 2 doc consults and getting dozens of these tests x-rays etc done I have still Not received a clear diagnosis or proper treatment. Pls help, symptoms r gettg worse