my cycle started around late august 2016. it has been late by a few days before. but it has never been this late. i went to the doctor april 15th and they did a urine and blood test (for something else but the pregnancy tests were still on it) and both were negative. my mom and her sister both have endometriosis. and my grandma on my dad’s side also has it. i haven’t had any pms symptoms but i have had mucusey blood that shows up for a day and goes away. the blood has been both red and brown. i also haven’t been very stressed out recently. or at least i haven’t really noticed it