Hello,
what i wish to know is how safe it is to take up strength training again after this experience?
It is reasonable to check a holter or event monitor to try and capture the beats that are causing your symptoms. From what you describe it sounds like a pac/pvc. Depending on your physical exam, an echo may or may not be indicated.
could the weights have damaged the heart in any way?
People with pre-existing valvular heart disease like mitral valve prolapse can damage their valve apparatus with heaving weight lifting, but this is rare.
I agree that physical fitness is very important for pyschological wellness. Talk to your doctor about these tests so you can start working out again without worring.
Thanks for posting.