"i really like the shot. i have had no weight gain or any other side effects. i did bleed very lightly for two weeks (my periods normally last 4 or 5 days) after the first month on it, but i haven&#039;t had any periods since then. occasionally i will get brown discharge or very light spotting, but it is such a small amount that i don&#039;t even notice. i can&#039;t take most birth control because i can&#039;t have estrogen, but i am very happy with the shot."