Mi madre me toca la frente porque cree que tengo fiebre.

Me shows who is affected by the action: me = to me / my in this kind of structure.

In Spanish, when talking about body parts, it is very common to use:

• an indirect object pronoun: me, te, le, nos, os, les
• plus the definite article: la frente

So me toca la frente literally works like she touches the forehead on me, but in natural English we say she touches my forehead.

Here:

• Mi madre = subject
• me = the person whose forehead it is
• toca = touches
• la frente = direct object

With body parts, Spanish usually prefers the definite article (el, la, los, las) when it is already clear whose body part is meant.

So instead of saying:

• mi frente

Spanish normally says:

• me toca la frente

This is very natural because me already tells us the forehead belongs to me.

Using mi frente is not impossible, but it usually sounds more emphatic, contrastive, or less natural in a simple everyday sentence.

Here tocar means to touch.

This verb has several meanings in Spanish, so learners often notice it can also mean things like:

• to play an instrument: tocar la guitarra
• to be someone’s turn: me toca a mí

But in this sentence, because the object is la frente, the meaning is clearly to touch.

So:

• Mi madre me toca la frente = My mother touches my forehead

Because after an affirmative verb of belief like creer, Spanish normally uses the indicative, not the subjunctive.

So:

• cree que tengo fiebre = she thinks that I have a fever

The subjunctive is more likely after negation, doubt, or uncertainty:

• No cree que tenga fiebre = She doesn’t think I have a fever

That is a very common pattern:

• creo que es verdad
• no creo que sea verdad

In Spanish, tener fiebre is the normal expression for to have a fever.

So Spanish usually says:

• Tengo fiebre

not:

• Tengo una fiebre

Adding una can sound unusual unless you mean a specific kind of fever or want special emphasis.

This is similar to other fixed expressions with tener:

• tener hambre = to be hungry
• tener sed = to be thirsty
• tener miedo = to be afraid
• tener fiebre = to have a fever

Because noun gender in Spanish does not depend only on the ending.

Although many feminine nouns end in -a and many masculine nouns end in -o, nouns ending in -e can be either masculine or feminine.

So:

• la frente = feminine
• el puente = masculine

You simply have to learn the gender with the noun:

• la frente

Because here it means because, which is written as porque in Spanish.

This is different from:

• por qué = why (used in questions)
• Por qué lloras? = Why are you crying?

In your sentence:

• porque cree que tengo fiebre
• because she thinks I have a fever

So porque is correct because it introduces the reason.

Spanish often uses the simple present where English might also use a progressive form.

So:

• Mi madre me toca la frente can mean My mother touches my forehead or, in context, My mother is touching my forehead

If you want to strongly emphasize the action is happening right now, you could also say:

• Mi madre me está tocando la frente

But the simple present is very natural here and often preferred unless there is a specific reason to stress the ongoing action.

Yes, that is also possible, but it is slightly different in structure.

• me toca la frente = she touches my forehead
• me toca en la frente = she touches me on the forehead

Both are natural. The version in your sentence focuses directly on the forehead as the thing being touched. The version with en focuses more on the location of the touch.

Spanish uses both types of structure, and the sentence you were given is very standard and natural.

Yes. Spanish word order is flexible.

For example, you could also say:

• Porque cree que tengo fiebre, mi madre me toca la frente.

That means the same thing: Because she thinks I have a fever, my mother touches my forehead.

The original order is the most neutral and straightforward:

• main statement first
• reason after porque

So the given sentence is probably the most natural version for everyday use.