3. Painful sex
If you do feel like you want to engage in sexual intercourse, you may notice that it is more painful, which leads us to our next sign of low estrogen levels: painful sex. Estrogen plays a very important part in all aspects of the female reproductive system, which of course, includes the vagina. This hormone helps to thicken the walls of the vagina and also aides in lubricating it; two things that are important for enjoyable sex.
If your estrogen levels are low, the walls of the vagina can thin out. Additionally, less lubrication is produced. These two things combined can make sexual intercourse painful. The pain can range from mild to severe and stabbing. Of course, if you do experience pain when you engage in sexual activities, you are going to be less interested in having it, which will further decrease your libido. If you find that sex is painful, low estrogen could be to blame.