I broke my ankle - dr said it will take about 5 to 6 weeks before i can walk on it if 5 to 6 weeks wasn't enough can i break that same bone again ?

6 weeks + 2: It usually take 6-8 weeks to under go the 1st round of healing in that bones are stable enough to do walk on it with a brace. Motion and strengthening of the ankle are encouraged usually requiring physical therapy (in a perfect world). Complete remodeling and strengthening of the bone can take an additional few months before high impact.Twisting ankle can reinjure ankle so wear brace till strong.

Yes: If you do too much activity on a non healed fracture it could seperate.