Scholars agree it is forbidden after the soul is breathed into the child (taught to be 120 days) unless the mother's life is in danger. Before that, they differ: some forbid it unless there is a real need, and others allow it for a valid reason before 40 days. The Quran forbids killing children (17:31, 6:151). Ask a scholar and a trusted doctor.
Di: «¡Venid, que os recitaré lo que vuestro Señor os ha prohibido: que Le asociéis nada! ¡Sed buenos con vuestros padres, no matéis a vuestros hijos por miedo de empobreceros -ya os proveeremos Nosotros, y a ellos,- alejaos de las deshonestidades, públicas o secretas, no matéis a nadie que Alá haya prohibido, sino con justo motivo ¡Esto os ha ordenado Él. Quizás, así, razonéis».
This is general information, not a fatwa. For your own situation, ask a qualified scholar.
Questions about halal and haram
Is abortion permitted?
Scholars agree it is forbidden after the soul is breathed into the child (taught to be 120 days) unless the mother's life is in danger. Before that, they differ: some forbid it unless there is a real need, and others allow it for a valid reason before 40 days. The Quran forbids killing children (17:31, 6:151). Ask a scholar and a trusted doctor.