As of recently, ive increased the amount of walking i do by 4-6 times. ive noticed my ankles have gotten swollen. is this normal?

I cannot think of any reason, under normal circumstances , one would develop swollen ankles from walking especially at your age. The only consideration is you are not use to activity and developed an overuse injury. both ankles are possible to become injured at the same time. Many types of overuse injuries are possible. visit your family doctor or podiatrist with knowledge in sports medicine.