Help please ? Should I be worried

I'm 16 years old and I have not been hungry like at all. It's not that I'm starving myself or have problems with my body I'm just never hungry. I make myself eat sometimes because i know I should be eating. When I do force myself to eat something I feel super full. I went all day not eating anything and I bite or two of any food makes me really full. This has been going on for almost 2 weeks now.