Where should the reflexive pronoun go?
The position of the pronoun depends on the verb form.
When the verb is in a normal conjugated form, the reflexive pronoun goes before it.
Me levanto a las siete. — I get up at seven.
Te acuestas muy tarde. — You go to bed very late.
Se llama Marta. — Her name is Marta.
Nos vemos mañana. — See you tomorrow.
In negative sentences, no comes before the pronoun:
No me levanto temprano los domingos. — I do not get up early on Sundays.
No se acuerda de mí. — He / she does not remember me.
With an infinitive, the pronoun can be attached to the end of the verb.
Quiero levantarme temprano. — I want to get up early.
Voy a ducharme. — I am going to take a shower.
If there is a conjugated verb before the infinitive, another structure is also possible:
Me quiero levantar temprano.
Both versions are correct.
With a gerund, the pronoun can also be attached to the end:
Estoy vistiéndome. — I am getting dressed.
But you can also say:
Me estoy vistiendo.
With an affirmative command, the pronoun comes after the verb:
Levántate. — Get up.
Siéntese, por favor. — Sit down, please.
Vámonos. — Let’s go.
With a negative command, however, the pronoun goes before the verb again:
No te levantes. — Don’t get up.
No se preocupe. — Don’t worry.
Before a conjugated verb
After an infinitive, gerund, and affirmative command