Constant mild headaches, pain behind eyes but behind one eyes a different pain.I feel weird and different. Sicky burping and also very loud breathing and difficulty breathing I'm 14 please help

It could be allergies, sinus infection, a need for glasses, an ulcer, nasal congestion -- please see your doctor who will take your medical history and check you over. We cannot diagnose you on the Internet (nor would you want us to).

Are you, or have you recently been, ill? If you are having trouble breathing, let a parent or guardian know right away. We can't diagnose over the internet. You really need to be seen by your doctor who can actually examine you and listen to your breathing,

As noted it can be many things, allergy , allergic reaction to something but again could be many things. Since there are breathing issues, you need to see a doctor