Constipation like this is common in pregnancy, but not responding to a laxative and an enema for 3 days needs a doctor's review in person.
Next Steps
Please see your obstetrician today or tomorrow rather than trying more medicines on your own, so they can examine you and suggest what's safe next.
Health Tips
If there is fever, vomiting, or severe abdominal pain, please treat it as urgent and go in right away.