heavy bleeding on birth control

Okay so I had my baby April 5 2017. After my 6 week appointment I started the mini pill. Well this past weekend my husband and I went on our anniversary trip, and my lovely mom brain forgets to bring the pills 😭. So Friday we had sex, and then I started bleeding pretty heavy. So I'm wondering if it's a period since I went the whole weekend without taking them? My last period was a little over a week ago. Anybody experience anything similar?