Hello! My husband and I started trying last month, and all of a sudden my cycle went from normal 28 days to 35 days last month and now I feel like I can't figure out ovulation! She. Does everyone start taking their ovulation tests? I think we missed it last month with my cycle being so late and now this month I've started taking them 15 days after the start of af and haven't had a positive yet! Do I just keep testing?