Thoughts?

So a little bit of background, I had a period April 1-6 then on April 9 I took a Plan B. I probably didn’t even need to but I was scared and I did, not knowing how much it throws off your cycle. Even though I already had a period earlier this month I got another period April 17 and still going, but it continues to get heavier. When should I expect it to stop? But what I’m really confused about is when to expect it next month? Will I get it again around the first, like normal? Do I expect to come around this time next month? Will I even get a period at all next month?