Mental health matters in pregnancy, and untreated depression or anxiety carries its own risks for both parent and baby. Some antidepressants have more reassuring data in pregnancy and breastfeeding than others, and for many people the benefits of staying well outweigh the risks of medication. This is an individual decision made with your doctor.
Stopping an antidepressant abruptly can cause withdrawal effects and a return of symptoms, so do not stop or change your dose on your own. If you are planning pregnancy or have just found out you are pregnant, arrange a review rather than stopping.
Your doctor can weigh up which option is safest for your situation, monitor you and the baby, and adjust the plan if needed. Reach out urgently if you have thoughts of harming yourself, and contact emergency services or a crisis line if you feel unsafe.