Pregnancy can have symptoms like spotting which is completely normal as the body is producing more estrogen. The increase of estrogen in the body signals the vagina to produce more discharge and brown discharge indicates normal vaginal discharge tinged with old blood. However, bleeding at 14 weeks of pregnancy can indicate serious complications that require immediate medical attention. Brown discharge at 14 weeks pregnant can be due to:
Sex
Pelvic exam
Mucous plug
Bloody show