Ava bracelet while pregnant?

M

Does anyone wear the Ava bracelet while pregnant? I am because it was so expensive. My skin temps have dropped the last 3 days :( the highest one was 96.45. Anyone wear theirs after getting their bfp? Or anyone continue to chart their bbt after getting your bfp? I have read that it isn't good and passed this picture to my doctor. Any insight, good or bad, would be helpful!