If you ovulate will you have ur period roughly 14 days later? Or is there a chance that you can still have an irregular period? I'm on my first round I'm suppose to get my period tomorrow and I've had cramping for 2 weeks but Negative hpt so should I expect my period tomorrow? Or is there a chance my cycle could still be super long? I'm just trying to figure it out to know if I should wait longer before spending more money on hpt or if I should buy them tomorrow if I don't get af?