Depending on the size of the tumor or how fast it grows. Normally, there are no outward symptoms of breast cancer nor pain. doing self exams around 40 yrs old or starting at 35 is normal. Mammograms usually depend on family history. If you have a strong history, the Dr will recommend a mammogram starting at age 35. The mammogram is the best way to find a tumor, even one to small for feel for. That's why they are so important and your best tool for detecting breast cancer. It doesn't normally strike any woman until she is post menopausal. It's rare for anyone under 35 to even have a tumor. But, never take chances. If you are scared, or feel you have something to worry about, then please as your Dr. Most women who begin to have their mammograms when the Dr says and has them yearly, will find the cancer if they have it. Like I said, it's your best diagnostic tool then the biopsy follows. So if you keep your appointments, there's not much chance of breast cancer going undetected. Blessings.
It depends on the type of cancer, but in a lot of cases cancer can be in late stages (spread around the body) before symptoms become really serious. With both breast cancer and lymphoma, the most common early symptoms are small, swollen lumps. In lymphoma, the lumps are swollen lymph nodes, and they're most common in the groin, the armpits, or the neck.
Once the cancer spreads, symptoms like fatigue, weight loss, fever, and night sweats (waking up with the sheets drenched) can start appearing. However, how long these take to appear really depends on the type of cancer. For example, some types of lymphoma grow really fast (in a few months), but others take years to spread.
Basically, if you have some lumps you can't explain, especially if they're large, growing, or feel hard you should tell your doctor about them. Lumps are almost never cancer, especially in young people, but when you catch cancer early, you can usually cure it.