Loss of Appetite?!

Loss of Appetite?

Hey there everyone. I'm a 16 year old male that's healthy, loves sports, and have been happy with my life forever now. Recently, I've noticed that I havnt been eating like at all, and whenever I get the chance too I kind of feel sick to my stomach. I don't understand what's going on? Yesterday all I ate was an orange and a banana, today I havnt eaten at all because I feel full.

I use to hungry A LOT and eat A LOT. I'm not fat, im not scrawny, im healthy like I said.

I'm just wondering why this could be happening, just no appetite at all.

Help?

1 week ago
ADD: My stomach doesnt hurt, I feel fine and healthy, i just dont feel like eating if that makes sense

stomach virus?