Hello, I am a 47 year old female w/high blood pressure, hypothyroidism and depression. I currently take Levothyroxine, 125 mcg, metoprolol, 50 mg. and sertraline 100 mg (or mcg?). I just recently was prescribed the metoprolol because Atenolol wasn't working, and my levothyroxine was increased from .25 mcg to 125 mcg. I've had chest pains - not constant, for about 3 weeks. Not sure if it's the medication or a muscle strain from a new exercise I tried for my arms about 3 weeks ago. Also, my pulse is slow - about 58. Any suggestions?