Lately, there has been an increase in the number of women aged 55 and younger being diagnosed with lung cancer. Lung cancer symptoms include a worsening cough, worsening breathing, coughing up blood, weight loss, or a change in how you’re feeling, then it's really important to let your doctor know. If things aren't getting better after antibiotics, or if you feel that something more is just wrong, a CT scan may be needed.