At my first mammogram i wear deodorant . ,she asked me you wear deodorant on the end ,not of beginning. deodorant affecting results on mammograms?

Depends on deodorant: I didn't know how deodorants could affect a mammogram but Dr. Cress commented some deodorants have metallic particles that can look like calcifications, so avoid deodorants with aluminum (best avoided anyways). Mammograms slightly increase risk of breast cancer so should be done with caution; there is an ongoing debate of the risks vs. the benefits. See https://draxe.com/mammograms-cause-cancer/