New to cycling, weigh 280 BMI of 50 age 63. Worked up to 5 miles a day sometimes ten. Unfortunately after and during the ride my tailbone aches so much that it is almost impossible to get out of chair after returning home. Some say change out seat, others get a better fit or adjust bike, pedals, seat height, handle bars ect. One person said take up a different sport! Yikes! At my weight there is considerable strain on my hands and back. The seat I use is a wide comfort seat. I have read where soft tissue should not have contact or pressure on it while riding. My wide seat feels like its not wide enough! lol! Seriously it never seems to be supporting my mass. What can do? I really like riding have a good friend that helps with motivation. But my tailbone still hurts from three days ago. Oh my ride is a Diamondback w/26" wheels. 21 speeds.