I am not exactly sure what you mean by a compression bra unless you mean a "sports bra". For my patients we place them in a surgical bra for one week to be worn 24 hours a day unless showering. After this week , they may go braless at night. We discourage buying new bras (Victoria Secret) until about a month. The breast will shape over time and a bra you buy too early may not fit the same down the road. As I am sure you know, a worn bra is not returnable. I would consult with your surgeon. We all have different recommendations.
This question is more appropriately asked of your surgeon, who knows what was done, who has followed your recovery, and who knows what type of bra you are wearing. Photos might help give a more specific answer on line. Thanks, all the best.