How do you say I am thinking of in Portuguese?

There are a few ways to say "I am thinking of" in Portuguese, depending on the context:

Formal:

* Estou pensando em... (This is the most common and literal translation)

* Estou a pensar em... (More common in Portugal)

Informal:

* Estou pensando no/na... (When thinking about a specific person or thing)

* Estou pensando em... (Also used informally)

Examples:

* Estou pensando em você. (I am thinking of you.)

* Estou a pensar em viajar para o Brasil. (I am thinking of traveling to Brazil.)

* Estou pensando no que fazer para o jantar. (I am thinking about what to make for dinner.)

The best way to choose the right expression depends on the situation and your level of formality.