Birth Control Nightmare!

So I've been on BC for about 5mths now, but I keep getting my period the week before it's "due" to come based on my pack. So, I'm basically have a period for 2 weeks....😐. Like, wtf seriously?!? And my OBGYN isn't taking this serious at all😒. Any suggestions for any different kinds of pills would be great 👍🏽