Im 3/4 weeks pregnant and have been bleedin lightly for 3 days on and off... I had a mc 23rd feb 2014 should I be worryed ?

How do you know that you're pregnant again so quickly? Do you know why you miscarried? How far along were you when you miscarried?

It isn't abnormal to have a little spotting in the early bit of a pregnancy, but if it is more than that you should see your doctor.

Another thing to keep in mind is that your body can miscarry a pregnancy for many reasons. One of those is extreme genetic abnormalities that would make it highly unlikely for the fetus to survive outside of the womb. Extra chromosomes or a copy error is the most common example of these abnormalities. The embryo will grow to a point and then abort itself. The only reason that I say this is if this becomes more common than you should take yourself and the father for genetic screening.

Good luck.