I think its not your period that makes you feel ugly
What I understand of my period as a woman is that period is like spring_cleaning.
Just like our womb starts renewing itself by kicking out the old womb linings,we start rethinking about our lifestyle and try to fix what is wrong with it
If you feel ugly during your period and it doesnt get better even after you wear make up and do everything you always do then that might mean you are not satisfied with how you look in general.
You may want to become skinnier or chubbier,you may want to grow your hair or to cut it or you may want to darken or lighten your skin .Anything you want but the reason is not your period
You just start listening to yourself when you are having your period but your period doesnt cause your unhappiness with your body.