I had a unprotected sex on the last day of my periods (24/1/21) but within 1hr u had taken the i-pill. from 2/2/21-6/2/21 i experienced a light bleeding what was that? am i pregnant? if not when shall i expect my next periods?

If by "the i-pill" is meant the "morning after" or "Plan B", the addition of the "morning after/Plan B" pill adds estrogen , and when that pill is metabolized, there is withdrawal (light) bleeding by the same mechanism as the bleeding during the true menstrual event, which occurs by the sudden cessation of ovarian estrogen, producing the degeneration of the endometrial cells of the uterus.