Can tailbone pain be a sign of colon cancer ?

Very very unlikely: Tail bone pain is not a usual sign of colon cancer. Unless you have a strong family history or early onset colon cancer, you are too young to worry about it. For good health - Have a diet rich in fresh vegetables, fruits, whole grains, low fat milk and milk products, nuts, beans, legumes, lentils and small amounts of lean meats. Avoid saturated fats. Exercise at least 150 minutes/week and increase the intensity of exercise gradually. Do not use tobacco, alcohol, weed or street drugs in any form. Practice safe sex. Get HPV vaccine.

Not likely: Tailbone pain is very common and NOT considered an independent symptom of cancer. If associated with swelling, fever and chills this is consistent with a Pilonidal infection. There are some very rare tumors that can grow in that area related to the spine and the pelvic cavity. Either way if your discomfort does not resolve with rest, time and ibuprofen you should consult your physician.