Oh yes, there are some threads about it.
If you search this forum for "chest pain" or "heart attack" those threads/posts should come up for you.

For most here that have had it , it was just muscle spasms and the intercoastal nerve being affected - some did go to ER to be checked for heart attack as the symptoms were so strong.

It that side the worst of your other symptoms too?

Do you feel tight and kind of locked up on that side?
Of course if you think it could be heart related get it checked.