Bleeding + cramps while on birth control

Lia

My period was around two weeks late and my doctor at planned parenthood told me to go ahead and start my BC patch as that would force start the period on the off week

I'm on the second week and now I'm getting bleeding and cramping, not as much as I would on my period, but a fairly decent amount.

Online I saw that you can't get your period while on birth control but I dont see what else this could be