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you should take the drug your doctor has asked you to take. two common causes of bleeding in first trimester are chromosomal abnormalities and progesterone deficiency
is a progesterone and it is recommended for progesterone deficiency and taken through out the first trimester. Chromosomal abnormalities is a common phenomenon and it accounts for over 70% of bleeding abnormalities during the first trimester and will eventually lead to abortions or miscarriages. At 6 weeks, it is difficult to evaluate cardiac activity thus a second ultrasound
is required later. If its a chromosomal malformation, the pregnancy
will eventually come out. If its deficiency in progesterone, the chances of keeping the pregnancy with the use of susten are fair enough.
What you should do now is to continue absolute bed rest
, abstain from sexual intercourse, and observe the bleeding; if bleeding persist and in clots you should meet your doctor immediately.