The blood which comes out after the delivery of a child is called nifas (postpartum period). Its maximum limit is forty days, the blood which continues after forty days is not nifas, it would be counted of istihadah. Some women experience blood less than forty days, for them this period is nifas. During nifas salah is completely exempted but fast is not forgiven, instead its qaza should be observed. During nifas going in mosque, doing tawaf, reciting the holy Quran or touching it is forbidden. Similarly, having intercourse is too forbidden. Apart from it, travelling or going somewhere is not forbidden according to Islam. Being harmful according to the health is medical precaution not Islamic ruling. Quote the whole hadith of Hadhrat Abu Bakar Siddiq (رضي الله عنه) with reference, then it will be answered.
Allah (Subhana Wa Ta’ala) knows Best
Darul Uloom Deoband