"listen this may put some minds at ease but if there is anything i have learned.. it&#039;s use condoms and get on the goddam pill as backup. anyway i had to share my experience with &quot;aftera&quot; which i guess is basically the same as plan b one step. i had sex june 12 with my partner. he pulled out but i started freaking out when i looked at my period tracker and realized that day was my most fertile day. within 2 hours i went to the store... all the had was aftera so i bought that. the next 2 weeks i had pregnancy symptoms. nausea , head/back aches.. fatigue, weight gain, cramps, and very tender boo sand nipples. i was nervous it wouldn&#039;t work since i am 340lbs. severely over the weight limit.. but i finally got my period 3 days late. good luck all"