There are no nudity or obvious sex scenes shown in this movie. In one scene, a man unbuttons and takes off Carrie's shirt. Her bra is briefly visible.
In one scene, Carrie at age 16 and her college professor are shown lying on the bed together, both fully covered by the blankets. It's implied they have been in a sexual relationship.
There are also some verbal sexual references in scenes where the protagonist overhears a man discussing his sexual issues, and later raises this to her therapist.
There are numerous conversations relating to why people have sex, the morality of extra-marital affairs, and a mention of a man's "award-winning tongue."