Its not problematic to have intercourse 1 day before the menstrual date. Spasmodic pain ( Spasmodic dysmenorrhea ) is quite common during menstruation
in young girls. When you expect menstruation you can start taking pain killers like Mefenamic acid
combination twice a day or similar drugs till menstruation is over. It will not only relieve pain but also reduce bleeding during periods. Take care.