Unexpected bleeding or discharge can be an early sign of cancer. For example, coughing up blood may indicate lung cancer, while blood in the stool may indicate colon or rectal cancer. Blood in the urine may indicate bladder or kidney cancer, and abnormal vaginal bleeding may be a sign of cervical or uterine cancer.

Changes in the appearance of the breast
Breast changes such as lumps, swelling, redness, or changes in the nipple (inversion or discharge) may be early signs of breast cancer. While lumps are the most common symptom, these other changes should also prompt a medical evaluation, especially if they appear suddenly.

Night sweats

Excessive sweating at night, especially when not related to hormonal changes such as menopause, can be an early symptom of some cancers, particularly lymphomas. Night sweats can be accompanied by fever or unexplained weight loss, which are other common signs of cancer.

Frequent infections
Cancers such as leukemia can weaken the immune system, making the body more susceptible to infection. If you notice that you have more frequent infections that are harder to get rid of than usual, it may be a sign that the cancer is affecting your body’s ability to defend itself.

Abdominal Pain and Bloating

Chronic abdominal pain, bloating, or a feeling of fullness after eating small amounts can be signs of stomach, ovarian, or pancreatic cancer. These symptoms are often dismissed as gastrointestinal issues but should be taken seriously if they persist or worsen.