Yes, it is very common in pregnancy. Normally all the women get the spotting when they conceived, during this time unable to take food, by consulting the doctor, the women can overcome this problems.
It is normal for a female to spot during their pregnancy period. Remember that because the fetus/baby is moving and can rupture a mini vein in your stomach that can cause the blood to go through the whole body. Prometrium is known for causing females to spot during their pregnancy.
Yes, spotting is very common during the first 3 months of pregnancy. Woman may even spot around the time of when their period should have been. Spotting is really nothing to worry about.
No'spotting is not common while taking prometrim,if it was in the starting of the pregnancy for a month or 2 ,no problem. But if it still persist it's better that you visit a docter.