Opinions on Amber teething necklace?

Sunny • Baby #1 girl born 2006💖 Lost baby #2 boy born 2007💔 TTC#3 since July/15. Got BFP July 6/16. Baby boy born Feb 2017 💖TTC#4 since July 2022. Got BFP Feb 15/23

Ive only recently heard about them and kind of hesitant with buying one. Do they actually work by just wearing them??

Im still pregnant lol but you can never do too much research.