Reference: http://mufti.af.org.sa/ar/content/حكم-جمع-الصلاتين-بعد-الإجهاض-بسبب-الشعور-بآلام-شديدة
Question: She is asking about [the permissibility of] combining the zhuhr and ‘asr prayers because of severe pains?
Response: If [having to do] wudhoo for each of the obligatory prayers is painful for you, and combining the zhuhr [prayer] with the ‘asr [prayer], and the maghrib [prayer] with the ‘ishaa [prayer] gives you relief from these pains, then there is no harm [in doing so].