Can any1 shine a light as to whats up?

So here is my dtory. I have a baby who is 2. At around 9 months i suffered severe depression and anxiety.  I was put onto fluoxetine after months of suffering and it helped me do much but i then started to feel lots of heart symptoms. Palpitalions chest pain shooting pain it would literally come from nower and happened aloy during the night is wake in a massive panic. I have seen my gp and 2 cardiologists iv had 2 ecgs a 24 hr holter and an ultrasound and they tell me all is ok and i dont have heart problms. Im no longer on the fluoxetine but getting these chest pains often sometimes it can b a stabbing pain other times a squeezing pain. 

Is it possible the tests have missed something? 

Any advice greatly appreciated 

Thankyou xxx 

Have they given you a d-dimer blood test to check for lung clots (pulmonary embolism or emboli). Some women are more prone to them after having a baby? They are so often missed. Do you get breathless or find it hard to take a deep breath in?