Dreaming about birth control pills in a dream can be understood as worrying about sex life and sexual responsibility. This dream may be related to your current living conditions and mental state. If you are nervous or anxious about things or decisions related to sex and reproduction, dreaming about birth control pills may be a psychological manifestation of you.
In a word, dreams are unique personal experiences, which need to be interpreted in combination with personal life background and psychological state. If this dream has a special feeling or confusion for you, please further communicate with a psychologist or dream interpreter.