UPDATE ❗️I Got my Period last week Thursday, so this must mean it’s safe to say I’m not pregnant? Even though this happen two weeks ago?

For Googling Now Im scared and freaking out. My last menstrual was the last week of May! Im irregular due to being obese and having PCOS! When having intercourse we always using condom. However on July 11 it pop! I took the plan b pill few hours later. But for the last couple days my Nipples are very sore! I’m not sure if pregnancy can happen from that July 11 incident. From googling of course it mentioned pregnancy but it also mentioned Breast Cancer! I’m freaking out in tears