Anal fissures are common in pregnancy because constipation increases as the uterus grows and hormones slow digestion. Sucralfate-based ointments like Sucral Ano are generally considered safe to use topically in pregnancy since they work locally with very little absorbed into your body.
Next Steps
Increase fibre and fluids, and ask your obstetrician about a pregnancy-safe stool softener if needed. Warm sitz baths after bowel movements also help the fissure heal. Confirm how long to continue the ointment with whoever prescribed it, since that depends on how quickly it heals.
Health Tips
See your obstetrician if you notice bleeding that doesn't settle, worsening pain, or no improvement in a couple of weeks.