Your period usually comes around 28th-30th every month.So ovulation time is 14th-16th and unsafe period is from 11th to 19th of each month.
You did unprotected sex from 24/11 to 26/11 which were risk free or safe period.So chance of pregnancy
is almost nil.
You get your period 10days early in this month. It may be due to hormonal
, emotional upset or uterine pathology. Brown red color indicates old uterine blood.
Do a USG lower abdomen and some hormone test to rule out pathology if any.Then consult with your gynecologist and take advice.
Avoid stress by doing regular deep breathing,take healthy diet,control body wt and proper sleep.