Some dr said that possible having period through pregnat?what is the difference between the regular period&period through pregnat?blood description?

Not possible: When you're pregnant you can't have a period. You can have spotting in pregnancy, but it's not a period. Spotting can be bright red, medium red, dark red or brown. Spotting in the first trimester occurs in 25% of pregnancies and should be talked about with your doctor. Spotting in the 2nd trimester isn't as normal and should definitely be addressed with your physician.