Abdominal muscles separation

My abdo muscles have separated and are causing me a lot of pain (I have been checked by doctors) I’m only 34 weeks and 4 days and I’m not sure how I’m going to last the rest of my pregnancy with this pain and to top it off I have morning sickness. How do people in the same situation as me deal with the pain? I have been prescribed paracetamol with codine but it makes me sick and itchy. This is my third baby and it’s getting harder and harder to look after my other 2 children.