As my earlier answer of 12 March 2018 to the honourable member stated, it may not always be appropriate for healthcare professionals to disclose confidential medical information that the patient has asked not to be disclosed.
Subject to these limitations, Home Office management information indicates that 53 pregnant women were detained in the immigration detention estate in 2017, of which 43 were granted temporary admission and released into the community. Of those pregnant women released, 3 sought refugee or humanitarian protection status following release and 2 applications were then granted. These statistics have been taken from a live operational database. As such, numbers may change as information on that system is updated.