I am palpitating- is this sentence correct?

"Palpitating" is a present participle, and as such, it cannot stand alone as a sentence. To make it a complete sentence, you need to add a subject and a verb.

Here are some ways to correct the sentence:

* "My heart is palpitating." (This is the most common and natural way to express this feeling)

* "I am palpitating with fear." (This adds more context to why the speaker is palpitating)

* "Palpitating, I took a deep breath and tried to calm down." (This uses the present participle as a modifier, describing the speaker's action)

The best way to correct the sentence depends on the intended meaning and the context.