Your most quick response will really help calm my nerves and I really appreciate your time reading this. Basically I had sex with a guy around 1:00 am on Thursday. He came and when he pulled out the condom got stuck inside me. I took Plan B (just the one pill) at 11:45am that same day. I got the condom taken out at 5:00pm on Friday. My question is do you think I should take Plan B again? The one I took on Thursday is suppose to be good for 72hours however I am scared that because I took Plan B before getting the condom out that it might be ineffective if there was still semen in the condom. Should I take Plan B again after the 72hours are up? Please help me, thank you so much.

Taking Plan B after the 72 hour will make it ineffective. No, don't take it again, it will just be a waste of money.

No, do not take it again, Also, it is less and less effective the longer, not "good" for 72 hours. Example at 70 hours it has little effect.