Late periods. 8 weeks while taking scan.

.Me and my newly married wife had an episode of unprotected event (there was no inter course, or ejaculation. Only rubbing as some may call it. Pre ejaculatory fluid was present) on October 31. She had her periods on October 23(first day ended on Oct 28). After that she got her periods on November 25 as normal. Then by December 26 she didn't get her periods. She has history of late periods . so sshe took an abdominal USG doubting pcos. USG showed normal uterus and endo thickness5mm on dec 26. She got her periods only 2weeks later(Total delay of 2 weeks).That period first day heat bleeding and cramping was present, following day it was compartevilyy less. She was in a lot of stress. We don't want babies now. But there are symptoms sucha s weight gain.constipation.migraine. Does she need to do an upt sir? Scan was transabdominal . if at all there was something it wud HV been 8 weeks while taking scan. Is there any chance. Considering the unprotected event- It was 3days after her 5day cyc