Mijn hart deed pijn tijdens het gesprek.

In Dutch, pijn doen is a very common way to say to hurt.

So:

• Mijn hart deed pijn = My heart hurt
• literally: My heart did pain

This sounds strange in English, but it is normal Dutch.

You may also see:

• Ik heb pijn = I am in pain / I have pain
• Dat doet pijn = That hurts

There is a verb pijnen, but it is much less common in everyday speech. Most learners should focus on pijn doen.

Deed is the simple past of doen.

• doen = to do
• doet = does
• deed = did

In this sentence:

• Mijn hart doet pijn = My heart hurts
• Mijn hart deed pijn = My heart hurt / was hurting

So the sentence is talking about pain in the past.

Both are possible, but they are not identical in tone or usage.

• Mijn hart deed pijn is very common and neutral.
• Mijn hart deed zeer also means My heart hurt, but zeer doen is often associated with physical pain and can sound a bit different in tone.

In modern everyday Dutch, pijn doen is extremely common. A learner will hear it a lot.

It can be understood in both ways, depending on context.

• literal/physical: actual pain in the heart or chest area
• emotional/figurative: heartbreak, emotional pain

Because the sentence includes tijdens het gesprek (during the conversation), many people might understand it as emotional pain unless the wider context clearly suggests a medical meaning.

So this sentence can be slightly ambiguous on its own.

Because mijn already functions like a determiner.

In Dutch, you normally do not say:

• de mijn hart ❌
• het mijn hart ❌

You simply say:

• mijn hart = my heart

This works like English: my heart, not the my heart.

Because gesprek is a het-word in Dutch.

So:

• het gesprek = the conversation
• een gesprek = a conversation

When learning nouns in Dutch, it is important to memorize whether they take de or het.

Tijdens means during.

It is a preposition, and it is followed by a noun phrase:

• tijdens het gesprek = during the conversation
• tijdens de les = during the lesson
• tijdens mijn vakantie = during my vacation

So in this sentence, tijdens het gesprek tells you when the heart pain happened.

Yes, Dutch word order is flexible, especially with time expressions.

The given sentence:

• Mijn hart deed pijn tijdens het gesprek.

is perfectly natural.

You could also say:

• Tijdens het gesprek deed mijn hart pijn.

This puts more emphasis on the time frame: During the conversation, my heart hurt.

Both are correct. The difference is mainly focus and style, not basic meaning.

They are close, but gesprek is usually the more normal everyday word.

• gesprek = conversation, talk, discussion
• conversatie = conversation, but often a bit more formal or less common in ordinary speech

So tijdens het gesprek sounds very natural in everyday Dutch.

No, that is not the normal way to say it.

Dutch usually says:

• Mijn hart deed pijn = My heart hurt
• Ik had pijn in mijn hart = I had pain in my heart

So hebben can be used with pijn, but the structure changes:

• Mijn hart deed pijn = the heart is presented as the thing that hurts
• Ik had pijn in mijn hart = I am presented as the person experiencing pain in that location

Both can work, but they are different sentence patterns.

The present-tense version is:

• Mijn hart doet pijn tijdens het gesprek.

That means:

• My heart hurts during the conversation or
• My heart is hurting during the conversation

Compare:

• doet = present
• deed = past

A rough guide:

• deed sounds somewhat like date without the final t, but with a pure long vowel
• pijn sounds somewhat like pine

A few details:

• ee in deed is a long vowel
• ij in pijn is a very common Dutch sound, often approximated by English eye

So a rough pronunciation of the whole middle part is:

• deed pijn ≈ dade pine

That is only an approximation, but it can help at first.

Yes, it is natural and correct Dutch.

It sounds like a normal sentence a native speaker could say. The only thing that depends on context is whether hartpijn is meant physically or emotionally. Grammatically and idiomatically, the sentence is completely fine.