"i liked the option of using the patch and changing it once a week and not having to worry about it. dr said to use back up for the first week. which we did. as i had never used anything like this and i am paranoid about getting pregnant, my boyfriend agreed to use backup for another week. 4 days into my second week i experienced blurred vision, chills, trembling, numbness of 3 fingers in my hand.. i immediately took off the patch thinking it was messing with me. 3 days after having the patch off i am still fighting the trembles and tingles of the fingers... i am guessing it is from the extra hormones that was being injected into me by the patch. i am giving myself a week before i go back to the dr to try something else."