Benim karnım ağrıyor.

This is a very common question.

Turkish often marks possession in two places:

• on the possessor: benim = my / of me
• on the possessed noun: karnım = my stomach / my belly

So:

• benim = the possessor
• karın = stomach/belly
• -ım = my

This is normal Turkish structure.

However, in everyday speech, benim is often omitted if the meaning is already clear:

• Karnım ağrıyor. = My stomach hurts.

Adding benim can make it more explicit or a bit more emphatic, like my stomach.

Usually, no.

The most natural everyday sentence is often:

• Karnım ağrıyor.

Because -ım on karnım already means my.

Using benim is still correct, but it can sound more explicit, contrastive, or emphasized, for example if you want to stress that your stomach is not the one hurting, but mine is.

So:

• Karnım ağrıyor. = neutral, very common
• Benim karnım ağrıyor. = more explicit/emphatic

Karnım comes from:

• karın = stomach, belly, abdomen
• -ım = my

So in principle it means my stomach/belly.

But there is an important sound change here:

• karın
  • -ım does not stay as karınım
• it becomes karnım

This happens because some Turkish words drop a vowel when a suffix is added. This is called vowel drop or syncope.

So:

• karın → karnım
• compare also:
  • burun → burnum (my nose)
  • ağız → ağzım (my mouth)

Because karın is one of the nouns that often loses its second vowel when a vowel-initial suffix is added.

The possessive suffix -ım begins with a vowel, so the word changes like this:

• karın
  • -ım → karnım

This is not random; it is a regular pattern with certain common nouns, especially some body-part words.

So learners usually just memorize this form:

• dictionary form: karın
• possessed form: karnım

Because of vowel harmony.

The possessive suffix meaning my has several forms:

• -ım
• -im
• -um
• -üm

Which one you use depends on the last vowel of the word.

In karın, the relevant vowel pattern leads to -ım, so:

• karın → karnım

A few other examples:

• ev → evim = my house
• okul → okulum = my school
• gül → gülüm = my rose

Ağrıyor means is hurting, aches, or is aching.

It comes from the verb ağrımak = to ache / to hurt.

Here it is in the present continuous form:

• ağrı-yor → ağrıyor

So the sentence is literally something like:

• My stomach is aching.
• My stomach hurts.

In natural English, we often translate it as My stomach hurts or I have a stomachache.

Because the grammatical subject is karnım (my stomach), not I.

In Turkish, the verb agrees with the subject:

• Ben ağrıyorum would mean I am hurting/aching
• Karnım ağrıyor means My stomach is hurting

Since karnım is third person singular, the verb is also third person singular:

• ağrıyor = it hurts / is hurting

Even though the sentence talks about your body, the subject is still the stomach, not you.

Because Turkish usually expresses physical pain differently from English.

English often says:

• I have a stomachache.

Turkish more naturally says:

• My stomach hurts. → Karnım ağrıyor.

So instead of having a pain, Turkish often uses:

• body part + hurt/ache verb

Examples:

• Başım ağrıyor. = My head hurts.
• Dişim ağrıyor. = My tooth hurts.
• Karnım ağrıyor. = My stomach hurts.

This is one of the very natural Turkish patterns for talking about pain.

The subject is karnım.

That may feel unusual to an English speaker, because in English we often think in terms of I:

• I have a stomachache

But in Turkish, the sentence is structured more like:

• My stomach hurts

So:

• karnım = subject
• ağrıyor = predicate/verb
• benim = optional possessor for emphasis or clarity

It is in the nominative case, meaning it has no extra case ending here.

That is because it is the subject of the sentence.

So this is not:

• accusative
• dative
• locative
• ablative

It is simply the possessed noun functioning as the subject:

• karnım ağrıyor = my stomach hurts

It can cover belly, abdomen, or stomach area, depending on context.

In everyday Turkish, karnım ağrıyor is a very normal way to say:

• My stomach hurts
• I have a stomachache

It does not have to mean only the external belly area. It is a general, natural expression for stomach/abdominal pain.

If you want to refer more specifically to the internal organ, Turkish also has:

• mide = stomach

So:

• Midem ağrıyor. = My stomach hurts
• Karnım ağrıyor. = also very common, often broader and very natural in daily speech

Benim comes before the noun because it modifies it as the possessor.

So the structure is:

• benim karnım = my stomach

This is the normal Turkish order for possession:

• benim kitabım = my book
• senin evin = your house
• onun arabası = his/her car

Then the verb comes at the end:

• Benim karnım ağrıyor.

That final-verb position is very typical in Turkish.

Yes, that is a very close literal translation.

Possible translations include:

• My stomach hurts.
• My belly hurts.
• My stomach is aching.
• I have a stomachache.

Which English version sounds best depends on context, but My stomach hurts is usually the most natural general translation.

No, that is not correct.

If you use the pronoun before a possessed noun, it should be the possessive/genitive form:

• benim karnım

not:

• ben karnım

That is because Turkish possession is formed with a possessor like:

• benim = my / of me
• senin = your / of you
• onun = his/her / of him/her

So the correct options are:

• Karnım ağrıyor.
• Benim karnım ağrıyor.

It is neutral and completely natural.

You can say it:

• in daily conversation
• at home
• at school
• to a doctor

The shorter version Karnım ağrıyor is especially common in speech.

So this is a very useful everyday sentence for learners to remember.