I've been noticing a bit of light blood mixed with sputum when I spit in the morning these past few days, and it's really starting to worry me. This started happening after I had a fever, headache, and dizziness for a day, but now the blood thing is the only issue, and it freaks me out. My dad passed away from colorectal cancer, so I'm super anxious about anything cancer-related. Could this be something serious like lung cancer or another type of cancer? I'm really scared and would like to know what you think.