Talk to Gastroenterologist on Stomach/Pain

I feel like vomiting everytime I've meal at night in specific. In addition to this feel like its burning inside my belly. Heartburn is another issue. Blood sugar always drops everytime after having a meal. Like, just too much of lifeless. My body starts cooling down everytime. And get restless. And feel urge to move my body or strech my body. And it happens at night while resting in legs like if i need to strech or squeeze. And having persisting pain from shoulders to lower back.