Had unprotected sex took plan the next morning. Had protected sex since then. Period is 2 weeks late. Took a pregnancy test came out negative.?

Pregnancy unlikely. If you did the test correctly at 2 weeks after the missed period, you are not likely to be pregnant. Plan B hormones may have altered your hormonal balance. If you do not wish to be pregnant, use contraception all the time, every time. You may consider implanted contraceptive, or IUD. Practice safe sex. Get HPV vaccine, if you are less than 27 year-old.