Eu preciso fazer uma pequena pausa agora.

Yes. In Brazilian Portuguese, you can often omit the subject pronoun when the verb already makes the subject clear.

So both of these are natural:

• Eu preciso fazer uma pequena pausa agora.
• Preciso fazer uma pequena pausa agora.

Including eu can add emphasis, clarity, or contrast, such as:

• Eu preciso fazer uma pausa, mas ele não.

In everyday Brazilian Portuguese, dropping eu is very common.

Because precisar works in two common patterns:

1. precisar + infinitive = to need to do something

   • preciso fazer
   • preciso sair
   • preciso estudar

2. precisar de + noun = to need something

   • preciso de ajuda
   • preciso de uma pausa
   • preciso de dinheiro

So in your sentence, fazer is a verb, so no de is used before it.

Yes, absolutely. That is also correct and natural.

There is a small difference in structure:

• Preciso fazer uma pequena pausa agora.
  = I need to take/have a short break now.

• Preciso de uma pequena pausa agora.
  = I need a short break now.

Both are fine. The version with fazer uma pausa sounds a little more like performing the action of taking a break, while precisar de uma pausa focuses more on the break as a thing you need.

Portuguese often uses verb + noun expressions where English might use a simple verb.

So fazer uma pausa literally looks like make/do a pause, but it means take a break / pause.

This kind of structure is very common in Portuguese. Compare:

• fazer uma pergunta = ask a question
• fazer uma visita = pay a visit
• fazer uma pausa = take a break

You may also hear pausar, but fazer uma pausa is very common and natural.

Because pausa is a feminine singular noun.

That means the article and adjective must agree with it:

• uma = feminine singular indefinite article
• pequena = feminine singular form of pequeno

So:

• um pequeno intervalo because intervalo is masculine
• uma pequena pausa because pausa is feminine

Agreement is a basic rule in Portuguese: articles and adjectives usually match the noun in gender and number.

Adjectives often do come after the noun in Portuguese, but some can also come before it.

With pequeno/pequena, both positions are possible, but the meaning or tone can shift slightly:

• uma pequena pausa = a short/little break
• uma pausa pequena = a small break, but this sounds less natural here

In this sentence, uma pequena pausa is the most natural order. Many common descriptive adjectives can go before the noun when the phrase is very fixed or idiomatic.

Here, agora means now / right now.

In this sentence, it tells you the need is immediate:

• Eu preciso fazer uma pequena pausa agora.

Depending on context, agora can sometimes mean things like at this point, currently, or even function in contrast:

• Agora eu entendo. = Now I understand.
• Eu morava no Rio; agora moro em São Paulo. = I used to live in Rio; now I live in São Paulo.

But in your sentence, the simple meaning is now.

Yes. Portuguese allows some flexibility.

All of these are possible:

• Eu preciso fazer uma pequena pausa agora.
• Agora eu preciso fazer uma pequena pausa.
• Eu agora preciso fazer uma pequena pausa.

The most neutral and natural version here is the original one, with agora at the end.

If you move agora to the front, it often adds emphasis:

• Agora eu preciso fazer uma pequena pausa.
  = Right now, I need to take a short break.

Good question: preciso can be both.

In your sentence, preciso is a verb:

• eu preciso = I need

But preciso can also be an adjective meaning precise / accurate:

• Ele é muito preciso. = He is very precise.

So context matters. In Eu preciso fazer..., it is clearly the verb precisar.

Preciso is the first-person singular present tense form of precisar:

• eu preciso = I need
• você precisa = you need
• ele/ela precisa = he/she needs
• nós precisamos = we need
• vocês precisam = you all need
• eles/elas precisam = they need

So the sentence starts with eu preciso = I need.

Yes, it is natural and correct.

That said, in everyday speech, Brazilians might also say:

• Preciso fazer uma pausa agora.
• Preciso de uma pausa agora.
• Vou fazer uma pausa rapidinho. = I’m going to take a quick break.
• Preciso descansar um pouco agora. = I need to rest a bit now.

Your sentence sounds polite, clear, and completely normal.

It works well, but there are other natural options too.

Common possibilities:

• uma pequena pausa = a short/little break
• uma pausa curta = a short break
• um intervalo rápido = a quick break
• uma pausinha = a little break, more informal and softer

Your original phrase is perfectly good. If you want something slightly more conversational, uma pausinha can sound friendly and natural in speech.

In careful pronunciation, roughly:

• Eu = eh-oo / ew
• preciso = preh-SEE-zoo
• fazer = fah-ZEHR
• uma = OO-ma
• pequena = peh-KEH-na
• pausa = POW-zah
• agora = ah-GOH-ra

In natural spoken Brazilian Portuguese, some sounds may get reduced a bit, and eu may sound quick and light if it is not emphasized.

A rough full pronunciation guide:

eh-oo preh-SEE-zoo fah-ZEHR OO-ma peh-KEH-na POW-zah ah-GOH-ra

This is only an approximation, but it helps with the rhythm.