Hi i hope someone can help.

last few weeks i have been having a lot of shooting pains in my heart region not in the middle region i dnt thing, the pain last for a minute then goes but this happens 2 times a day. im only 24 male normally fit and healthy. sometimes it happens after food sometimes after exercise. i dont feel pain whilst running. the pain also happens in me back region but to the left and also under my armpit. have i just pulled something or is it something minor like heartburn (which ive never had by the way, or at least i dont know what it feels like).

i have been suffering with anxiety and panic attacks not long ago but i got rid of that but this has got me a bit worried again. the panic attacks and anxiety is related to sleep apnea as im having test for it.

any ideas thanks