I bled after 16 days of eating an ipill (emergency contraceptive) because i was scared of getting pregnant, after bleeding for 5-6 days is it safe to say that i'm not pregnant?

IPill, sometimes referred to as the “morning after pill,” is emergency contraception you take within 48-72 hours after unprotected sex. It contains a high level of hormones that interfere with the implantation of a fertilized embryo. The (hormone) can have side effects including irregular bleeding, nausea, abdominal pain, fatigue, headache, breast pain. Irregular bleeding can last a month.