Withdrawal bleeding after iPill. Issue?

First day of my last period was on 19th May. I had intercourse on 24,25 & 26th May where my partner did ejaculate inside me. I took ipill on 27th May early morning and saw signs of withdrawal bleeding on the night of 5th June and had it till 11th June. I had dark red/brown bleeding (light bleeding) with uterine lining shedding. I did have some cramps like feeling for the first few days of withdrawal bleeding. On 12th June, I barely bled and saw minimal to no uterine line shedding. On 13th June morning I had similar withdrawal bleeding between 6:30-9am but after that throughout the day I had bright red bleeding with no uterine lining shedding (just like one bleeds during periods) but throughout the night I had minimal bleeding with some shedding. My next period is due on 18th June. Am I having an early period right after withdrawal bleeding. I’m very concerned with what is going on. Am I pregnant or facing a major underlying issue?