Round follicles are of course better because they are more tense, have more chances of rupture and increase the chance of expelling the egg. Oval-shaped follicles are less tense and have less chance of rupture. However, clinically, neither round nor oval is absolutely good or bad, as round follicles can also rupture and ovulate, and oval ones can also rupture and ovulate. Whether round or oval, as long as the follicle reaches the dominant follicle and you want to plan a pregnancy, you should choose to have intercourse with the dominant follicle, and your chances of pregnancy will increase, because after the dominant follicle, you will ovulate about every other day.