I had sex In April 10 days after my periods, and took Unwanted 72 without 72 hours. After that I had light bleeding 6 days later. That lasted for 2-3 days. Then I missed my May periods took home kit pregnancy test ( twice) and beta HCG test ( 1 week after scheduled date of last date of periods). Everything came negative. My HCG level was <0.100. She had her periods in June ( exact date of her light bleeding in May) and similarly in July. ( Heavy clotting blood + cramps). This month in August she had bleeding ( not very heavy) for 3-4 days. Can she be pregnant? Is there any chance?