Yeah absolutely on the 2nd opinion, my dad went into his GP and said “I think I have lung cancer”, after a period of difficulty breathing and low energy. The GP diagnosed him with low iron and gave him some iron supplements, didn’t even get a scan. A few months later he had to have a couple of litres of fluid drained from his lungs while on holiday, turned out to be mesothelioma. Obviously we’d prefer it to be low iron, but better to know what is going on and be able to respond to it.