having a horrible pain
The phrase 'tener un dolor horrible' in Spanish translates to 'having a horrible pain' in English. It's often used to describe a severe physical discomfort or distress, for instance due to injury or illness. Please note that the verb 'tener' is used in this context to express 'having'. Also, as in English, in Spanish too, the adjective 'horrible' corresponds to 'horrible' and 'dolor' corresponds to 'pain'. Thus, grammatically, 'tener un dolor horrible' is a common phrase in Spanish expressing the state of enduring a severe pain.
I can't concentrate because I have a horrible pain.
This sentence expresses that the speaker is unable to focus due to experiencing a severe pain.
After the fall, I have a horrible pain in my leg.
In this phrase, the speaker describes feeling intense pain specifically in their leg following an accident.
The doctor asked why I have a horrible pain in my stomach.
Here, the speaker recounts a conversation with a doctor who inquires about the cause of their severe stomach pain.