MESTRUATION - many people have doubts regarding sexual activity during menstruation. IT'S OK TO HAVE SEX during this time. Although biologically the body has a decrease in hormones (in theory it reduces sexual desire)... psychological and social issues (not getting pregnant) mean that many women have an increase in libido during this period. ATTENTION: 1 - increases the risk of contamination by STIs (sexually transmitted infections); 2 - PRACTICE PROHIBITED BY THE SITE!