My sister is 6 weeks pregnant and has just called me from work asking me about a bleed she had last night. She has had light spotting on a few occasions during her pregnancy so far but this time she said it was after 'heavy petting' with her husband and it was a little bit of bright red blood followed by some brown and a couple of tiny clots
Is this a sign that miscarriage is imminent? If it is is there anything she can do?