Why is my vagina not lubricating?

For more than two month my vagina is not lubricating during sexual intercourse as usual

Vaginal dryness can happen when the skin inside the vagina becomes thinner, dryer, and less stretchy. This can often cause dryness, discomfort, or pain during sex. There are many reasons why you may be experiencing vaginal dryness, but the main cause is changes in the levels of estrogen and other hormones in the body. Estrogen levels can change due to menopause, certain medicines, and childbirth.  

All of these changes affect the way your vagina gets wet during sex. 

You can use lubricant to have more comfortable sex. Most condoms come pre-lubricated, but adding more lube helps keep condoms from breaking and can make sex feel even better. Lube keeps sex slippery, cutting down on the friction and leading to safer, more comfortable sex. 

Always make sure your lube is safe to use with condoms. This means only using water-based or silicone-based lube with latex condoms — lube with oil in it can break down latex and cause condoms to tear. It’s also a bad idea to use lotions, baby oil, or Vaseline as sexual lubricants, because they can irritate your genitals and break condoms. Sexual lubricants that you get in the condom aisle at the drugstore are usually safe to use with condoms. You can always read the package or directions, just to be sure.