Is it time to replace your toothbrush?
It is recommended that you replace your toothbrush every 3-4 months. One of the reasons is that the bristles lose their cleaning ability. Once the bristles become overworked they won't reach the spots between the teeth and along the gum line effectively.
Germs can also hangout on your toothbrush. If you or a member of your household has been sick, it's a good idea to replace your toothbrush as well as the toothbrush of everyone in your household.
If you can't remember exactly how long it's been, pay attention to the condition of the bristles- whether they are worn out, fan out., or are frayed. You should also check for cleanliness. If you don't rinse your toothbrush properly, toothpaste residue can build up and build up bacteria that makes you sick.