A contraceptive patch needs to be applied on a weekly basis. The one patch per week for 3 weeks and one week without the patch. The contraceptive patch is not suitable for all women, one should ensure that they fit the specification before purchasing or applying the patch.

Yes, illness does not effect the effectiveness of the patch neither does throwing up this effects the contraceptive pill but not the patch.

No, that is a weekly birth control and will not work as an EC.

The birth control patch is a combined hormonal contraceptive method, like the pill. With the patch, you put a new one on weekly for three weeks, and take the fourth week off.

The Pill, the patch, depo-provera, nuva-ring.