You bought a new toothbrush and two days later cold sores popped up on your mouth is this just coincidence or could it be due to the toothbrush?

It is possible that your toothbrush may be the cause of your cold sores, but it is also possible that it is just a coincidence. Cold sores are caused by the herpes simplex virus, which can be spread through direct contact with an infected person or through contact with contaminated objects. If your toothbrush was contaminated with the virus, it is possible that you could have become infected when you used it.

There are a few things that you can do to reduce your risk of developing cold sores:

- Avoid contact with people who have cold sores.

- Do not share personal items, such as toothbrushes, with someone who has cold sores.

- Wash your hands frequently with soap and water.

- Avoid touching your mouth or face with unwashed hands.

- Keep your toothbrush clean and dry.

If you develop cold sores, there are a few things that you can do to treat them:

- Apply an over-the-counter antiviral cream or ointment to the sores.

- Take an over-the-counter pain reliever, such as ibuprofen or acetaminophen, to relieve pain.

- Drink plenty of fluids to stay hydrated.

- Avoid spicy or acidic foods, which can irritate the sores.

Cold sores usually last for about 7-10 days. If your sores do not improve after 10 days, you should see your doctor.