Evet aslan, çok tşk,

My understanding for başım ağrıyor,

That i am talking about the third person usage because it is a third person.

İt sound wierd,but that is how it was explained to me

İ am saying ,my head is hurting me İngilizce
Ama,
Türkçede, we say my head hurting.

So i am talking about a thing,'o' which is my head,and it is hurting,not talking about me.!!!

İ know ,sound wierd,but its how it is !

When my head is hurt,it is a result that i am hurt,but we say,my head hurting 'third person usage'

Karnım acıktı
başım ağrıyor
yes we say like you said.