Hi Hitrexmex, welcome to HealingWell,
If you like to read, here's a page I found interesting, it concerns normal heart rates.
This web page is by an Electrophysiologist, a heart rhythm specialist. I think you'll be surprised in the range of heart rates that may be normal for different people. www.drjohnm.org/2011/08/whats-a-normal-heart-rate/
Have you seen someone about
the pains, if you did, what did they say? By chest pains, what do you feel? You seem to indicate your pains occur days after working out, for the large part, most pains would occur in conjunction with exercise or nearer to the actual exertion. If you've discussed this with your doctor, and he/she feels the pains are unrelated to the heart, I can provide an interesting link to non-heart causes of chest pains.