ive been waiting for af so i can book in for a hsg but the only appts they can offer are on the 21st or 22nd of may when we are on hol. ive just read an article that says it has to be done BEFORE ov, my period started on sat, i have a 29 day cycle so i will ov on the 20th, am i being thick here or should the nurse have taken this into consideration?