If you have had them in your closet for one year, is that okay?
Yes, they do have an expiry date, but it is particularly long. The tampons need to be stored in cool dry place or they catch fungus easily. Also, old tampons can cause vaginal infection. So, if they have been in your closet for long, please throw them away. Hope this helps. Take care!
The medical advice given should not be considered a substitute for medical care provided by a doctor who can examine you. The advice may not be completely correct for you as the doctor cannot examine you and does not know your complete medical history. Hence this reply to your post should only be considered as a guiding line and you must consult your doctor at the earliest for your medical problem.