In view of the history of cervical cancer
, i`ll advise that you should not neglect this pain in your chest. You have to get a x ray
chest and also CT Scan
chest done to rule out any spread of the cancer. These tests will help to rule out any other lung condition that may be causing this pain. The pain in the chest may even come from other structures like spine. Hence i suggest you consult a physician or a pulmonologist who will advise you as to what other tests you need to undergo.