Safety for women having anal sex

For women, be careful not to use the same finger to stimulate her anus as you use to touch her vagina. This is because you could transfer small amounts of faeces to the vagina which can cause urinary tract infections such as cystitis. The same goes for using a finger to stimulate the anus and then putting it in the mouth, as this can pass on sexually transmitted infections (STIs) such as hepatitis.