Thanks for your query.
There Is no problem In having sexual Intercourse during periods
You do not have any side effects.
Only thing Is maintain cleanliness, that Is by cleaning your private parts before and after Intercourse.
And void urine post Intercourse,this Is a general tip to be followed by both partners and during all days.
There are no restrictions during periods.
Hope I have answered your query.
I will be available for your followup queries if any.
Wishing you good health.