The birth control pill called Yasmin contains 0.03mg of ethinyl estradiol, or ethinylestradiol, which is a estrogen, found in almost all modern formulations of birth control pills. Heavier dosages are made to create the morning after pill. Typically the morning after pill has a slight bit more ethinylestradiol in it than .03mg, it usually has closer to .05mg. At .05mg the dosage is 2 pills 12 hours apart, since the odds of success of the morning after pill varies 98.2% to 92.6%, you have a good chance of remaining not pregnant.
In case you were concerned the side effects of taking ethinylestradiol they are: nausea, vomiting, and breast tenderness.
