Period 17 days late!!! Freaking out!

My cycle is 17 days late.. I’m freaking out because I’m never ever late. I’ve been early about 7-8 days the last cycle.. there’s no way I could be pregnant because I’ve been celibate for a while on my spiritual journey. But I’m reading reason and the big (C WORD) is leading to why. 😩.. obgyn can’t see me until May 1st.. March was a very stressful month for me along with January and February.. has this happened to any of you before? What was the outcome?