Thank you for your query.
It seems like you are suffering from rectal bleeding
which might lead to preterm labour.
A single course of the medicines described would not any damage to your fetus.
Also the spasmag can be taken for 2 weeks.
please improve on your diet, and be careful about fetal growth, amniotic fluid
levels and fetal nutrition by serial clinical examination and ultrasounds.
Have bland , home cooked food and avoid outside eatables.
Take regular antenatal supplements as prescribed.