I am pregnant 40 days and had been exposed to X-rays indirectly before 20 because was in the same room when my son a chest X-ray. Will this will be harmful for pregnancy?

The level of radiation exposure you received due to indirect exposure while in the same room during your son's chest X-ray is typically considered low and unlikely to cause any significant harm to your pregnancy.

X-rays use ionizing radiation, which can be harmful to cells, including developing fetal cells. However, the amount of radiation scattered or leaked during medical imaging procedures, such as X-rays, is generally small and tightly controlled within safe limits. For the protection of patients and healthcare professionals, radiation doses for diagnostic imaging studies are regulated and optimized to deliver the necessary information while minimizing exposure. However, the safety depends on the distance from the source and shielding from the scattered radiation.

Therefore, it is unlikely that the indirect exposure you experienced would result in a radiation dose high enough to cause adverse effects on your pregnancy. Nevertheless, for your peace of mind, you may want to discuss your concerns with your healthcare provider, preferably a medical professional specializing in prenatal care, who can assess your individual situation and provide tailored guidance