There is a sever pain in my upper left abdomen which ranges to my back, whenever I eat and sleep after 12(say 2 o'clock in the night) as it starts paining around 5-6 PM and wakes me up deliberately. It continues to pain for around 3 hours then it goes away. *I use to smoke cigarettes in the past but now I have switched to vaping to quit it.* Do you have any suggestions or recommendations please let me know, cause I can't focus on my studies because of this overwhelming pain! Thank You.