Brown discharge

Je

Hi everyone!! I’ve been getting brown discharge for 2 weeks now.. and I’m 4 days late. But I do have PCOS so my periods are irregular, I can either miss a month or be off by weeks and not be pregnant. I was wondering if this has ever happened to anyone? I have no symptoms jus been craving a bunch of sweets. Ohh also I am on a diet and I lost 14 pounds. Lol last time I lost a bunch of weight I got pregnant so I am a little worried.. I will be buying a pregnancy test tomorrow but I wanted to know if this has happened to anyone else before.. thank you in advance :)