Just telling story (horror?)

Two days ago, I was camping with my family at Pantai Puteri. Long story short, it was 12:30 AM smth. I was exploring the parts where I wasn't supposed to explore. When I entered it, I suddenly heard someone whispering behind me. Almost same as chanting something. I began to recite surah Al-Fatihah and stepped away while it's still whispering. As soon as I arrived at my campsite with my family, I began to cough badly and almost throw up. I didn't think much and went to sleep. Yesterday, I wasn't feeling really well. Still, I didn't think much of it. Last night, I keep hearing voices in my head. I began to become paranoid. I eventually throw up and pass out. Right now, I am feeling well.