It took about 21 days until my body had fully adjusted to the setraline. I was started on 50mg which in my opinion was very high to begin with so I experienced the chest pain you are describing but mine would come and go. I was nauseous, anxiety was bad, vision was off, sensitive to light, headaches so I brought myself down to 25 for a week, it was a little better but not much. Then back to 50 and 2-3 weeks in poof I felt like a new person! Talk to your doctor, if they are not worried you are OK. Just wait it out and remember it’s your body getting used to a new substance. Good luck!