בכל פעם שיש לי בחילה, קצת מנוחה עוזרת לי יותר מקפה.

Yes. בכל פעם means every time or whenever.

It is made of:

• ב־ = in / at
• כל = every
• פעם = time / occasion

So literally it is something like at every time.

You may also hear כל פעם in everyday speech. Both are common, but בכל פעם can sound a bit fuller or slightly more formal in some contexts.

Hebrew often expresses having something with יש ל־, literally there is to...

So:

• יש לי = I have
  literally: there is to me

That is why:

• יש לי בחילה = I have nausea / I feel nauseous

And in the sentence:

• בכל פעם שיש לי בחילה = every time I have nausea

A few important points:

• אני יש לי is not standard here.
• כשאני בחילה is not grammatical, because בחילה is a noun, not an adjective meaning nauseous.

בחילה means nausea.

In this sentence, יש לי בחילה is a very natural way to say:

• I feel nauseous
• I have nausea

Hebrew often uses a noun in these body/health expressions:

• יש לי כאב ראש = I have a headache
• יש לי חום = I have a fever
• יש לי בחילה = I have nausea / I feel nauseous

So even if English sometimes prefers an adjective like nauseous, Hebrew commonly uses this noun pattern.

Because the sentence is talking about nausea in general / an episode of nausea, not a specific previously identified nausea.

So:

• בחילה = nausea / a feeling of nausea
• הבחילה = the nausea

In this sentence, the indefinite form is the natural choice:

• בכל פעם שיש לי בחילה = every time I have nausea

If you said הבחילה, it would usually sound like you mean a specific nausea already known from context.

קצת means a little, a bit of, or some.

So:

• קצת מנוחה = a little rest / some rest

This is a very common structure in Hebrew:

• קצת מים = a little water
• קצת זמן = a little time
• קצת אוכל = a little food

So here קצת modifies מנוחה and tells you the amount.

Because the subject is מנוחה, and מנוחה is a feminine singular noun.

In the present tense, Hebrew verbs agree with the subject in gender and number.

So:

• מנוחה עוזרת = rest helps
  feminine singular
• קפה עוזר = coffee helps
  masculine singular

That is why the sentence says:

• קצת מנוחה עוזרת לי

The verb agrees with מנוחה, not with לי.

Because לעזור means to help, and the person being helped is expressed with ל־ (to).

So:

• עוזר לי = helps me
• עוזר לך = helps you
• עוזר לו = helps him

Literally, עוזרת לי is something like helps to me, though in natural English we just say helps me.

So:

• קצת מנוחה עוזרת לי = a little rest helps me

This is the normal Hebrew way to make comparisons.

• יותר = more
• מ־ = than / from

So:

• יותר מקפה = more than coffee

Hebrew uses מ־ after comparatives:

• יותר טוב ממני = better than me
• יותר מהר מהאוטובוס = faster than the bus
• יותר מקפה = more than coffee

So in the sentence:

• עוזרת לי יותר מקפה = helps me more than coffee does

The second verb is not repeated, because Hebrew often leaves it understood.

Not necessarily. Here יותר directly compares how much something helps.

So:

• עוזרת לי יותר מקפה = helps me more than coffee

You do not need to add טוב.

Compare:

• זה טוב יותר = this is better
• זה עוזר יותר = this helps more

In your sentence, the idea is:

• rest helps me more than coffee helps me

So the comparison is built into עוזרת ... יותר מקפה.

The given order is the most straightforward and natural here:

• קצת מנוחה עוזרת לי יותר מקפה

Hebrew word order is somewhat flexible, but this version is clear and neutral:

1. condition: בכל פעם שיש לי בחילה
2. subject: קצת מנוחה
3. verb + object/complement: עוזרת לי יותר מקפה

You might hear different orders for emphasis, but they would sound more marked. For a learner, the sentence as written is an excellent default pattern.

Yes, but the meaning shifts slightly.

• כשיש לי בחילה = when I have nausea
• בכל פעם שיש לי בחילה = every time I have nausea

The second one is more explicit and repetitive: it stresses that this happens whenever that situation occurs.

So both can work, but:

• כש... is a general when
• בכל פעם ש... is specifically every time that...

Yes, it sounds natural.

A native speaker might also say close variations such as:

• כשיש לי בחילה, קצת מנוחה עוזרת לי יותר מקפה.
• כשיש לי בחילה, מנוחה עוזרת לי יותר מקפה.
• כשיש לי בחילה, עדיף לי לנוח מאשר לשתות קפה.

But the original sentence is perfectly normal and understandable.

A simple pronunciation guide would be:

Be-khol pa'am she-yesh li bekhi-lá, ktzát menukhá o-zé-ret li yo-tér mi-ká-fe.

A few notes:

• בכל = be-khol
• פעם = pa'am
• שיש = often sounds like she-yesh
• בחילה = bekhi-lá
• קצת = ktzát
• מנוחה = menukhá
• עוזרת = o-zé-ret
• יותר = yo-tér
• מקפה = mi-ká-fe

The stress usually falls near the end in many of these words, especially:

• בחילָה
• מנוחָה
• יֹותר
• קָפה