Is it possible that i have add/adhd or show signs of it?

Hard to say: You ask a question with no background information. This makes any valid answer impossible. The differentiation of these two labels requires specific testing and observations. Without both, an answer on the site would just be speculation.Find an educational psychologist to do an evaluation and you may find the answer.

Unlikely: If you did not have symptoms of ADHD as a child and have not experienced a brain injury or infection, it is unlikely you have ADHD. Consult your doctor to determine if you have a medical issue like hyperthyroidism, that can mimic ADHD symptoms. You should also explore depression, anxiety and other emotional issues that can present with similar symptoms.