Pregnant 15 weeks on the large slightly forced to see red, not hemorrhoids, what is the reason for t

Pregnant 15 weeks of women, when the stool force, found that there is a red phenomenon, has been ruled out is caused by hemorrhoids, may be the possibility of threatened abortion, and abdominal pressure increased has a great relationship, at this time need to seek medical treatment for diagnosis, once there are signs of abortion, need to carry out fetal treatment.