that lasted for 10- 30 seconds coming and going ocassionally is not cardiac pain .
pain described as pressure, squeezing, fullness or pain in the center of your chest. Some people with angina symptoms describe angina as feeling like a vise is squeezing their chest, or feeling like a heavy weight.
most likely your pain be muscular or Costochondritis
( as pain lasting only 10-30 sec) and not related to exertion