Girls, give me some advice, I’m seriously losing my mind! My period is 15 days late, but all the tests I’ve done have come back negative. Should I say it’s seasonal or something? But it has never been this late; it used to be like clockwork. I wonder if a cyst has formed or if it’s stress, I don’t know, but it feels like there’s some swelling in my stomach. Has anyone experienced something like this? Is there anything I can do before going to the doctor?