probably you should not continue physiotherapy,.. why because, hydrocholateral packs, IRR, Diathermy, hot packs and ultrasound will induce vasodialatation which increases general body temperature.. so that it may facilitate the menstrual flow.. naturally womens does not feel comfortable with massage and exercises.. sombody have abdominal or pelvic pain also..they will become lethargic soon.. so, avoid giving physiotherapy atleast for 3 days..