3. Isn’t it time for you to wash your sheets?
If you haven't washed your sheets in weeks, it is very likely that your sleep is not very good. Dirty sheets are full of harmful bacteria. The matter is serious enough since some of them cause pneumonia and allergy. If you do not want to get sick, do washing every week. Use the hottest water if it is safe for the material. Afterwards put the sheets in the dryer. They will not shrink if you set the machine to low heat.