Irregular period!

Sara

My normal periods are 3 days and very light. However, my current one has been going 8 days and it’s VERY heavy. It shows no signs of stopping soon. I’ve changed birth control prior to this, so I was wondering if it could be the cause. I’ve never had this happen and my OBGYN is booked up for the week. My cramps are far worse than they have ever been and I’m concerned.

Help?