The medication you are put on is for supplementing your hormones but not for inducing ovulation. You are also given nutritional supplements. The slight spotting on the 13th day could probably be a mid-cycle spotting that is sometimes seen. I advice you to have a follow up with your doctor as your hormonal
levels should be assessed first considering your age as also your ovarian function and patency of tubes and other things that could hinder your chances of conception. Take care.