Started taking BC continuously and having a sudden very intense flare up??

Hi all! So I went to a new doctor last week and FINALLY was told endometriosis is the most likely thing going on with me (after years and years of appointments and ultrasounds and "bladder infections")

My doctor decided the first step would be taking my birth control (which I've been on for 7 years) continuously instead of allowing myself to have a period. I was supposed to start my period a few days after the appointment, but she told me to start right away so I never got it.

It's a little over a week later and the last 3 days I've had sudden bowel issues and one of the worst pain flare ups in a year!! Is this related to me changing my birth control use? Has this happened to anyone else??? Please help!!