Hi Sushma, Welcome to HealthcareMagic Forum.
It is absolutely safe to have sex during this time Provided your Husband uses a Condom. But there is one Problem, as the chances of Infection are more during this time as the cervix
opens to allow blood to pass through. This creates the perfect environment for bacteria to travel deep inside the pelvic cavity
causing Pelvic Inflammatory Disease. You will be more likely to develop Fungal or bacterial infections because the vaginal pH during menses is less acidic. Finally, there will be chances of Pregnancy
if you are not using a Protection.