Do I have CHS?

Hello everyone. I had surgery last Wednesday and was experiencing extreme stomach pain in the middle of my chest after taking celecoxib. The next day my stomach still felt sore so I decided to go to the ER, all the tests done bloodwork and everything came back clean. I’ve heard of CHS before but I didn’t really think I ever had the symptoms. I do occasionally throw up bile in the morning (usually because I eat to close to bed) (Or atleast I think) the ER sent me home and the reason for everything is CHS. Now I see the main symptom of CHS is throwing up constantly. So I’m just unsure . I do admit I might of smoked a little earlier in the day than usual

I do have occasional morning nausea, but as I said I’m pretty sure that only happens when I eat to close to bed. My appetite was completely gone during those two days, now is back to normal. After the ER the pain hasn’t came back I dont have a fear of throwing up, (throwing up usually makes me feel better) I’m posting here just because I’m unsure, and it makes me anxious to think about having this.