If you are wearing yellow Sapphire, you can experience the following things that can indicate that Yellow Sapphire is not benefiting you.
1. you will become too moody and mood will keep changing all through the day.
2. you will gain weight. you appetite will be unnatural.
3. you will not be able to keep the things secret.
4. your voice will become loud and also you will detoriate your personality.
So check all these and see if these factors are there. If not then you have no issues with Yelow Sapphire and you can continue wearing.