During sex about 15 hours ago, the condom came off of my partner. We are not sure when this occurred during intercourse however he released inside of me,and right after we discovered that the condom was not on him anymore and it was inside of me. Will taking Plan-B work if I take it in about 5 or 6 hours? Also, I am currently on Adderall (20 mg), will this lessen the effectiveness of Plan-B?