Hi hun didnt wanna read and run heres what happened to me 1day before my 12 week scan i bleeded really bad dark and bright red blood and massive clots and lil ones too, by then i was thinking oh my what if this is my baby i dont want to flush the loo etc so went to hosp and did a wee sample and lost a massive ball clot sorry tmi and they said this isnt looking good so excpect worse tonorrow morning when you have your scan so i went home that night didnt like moving cause when i did more blood came out and next day went for my scan in tears expecting the worst and there was my strong little bean at 12 weeks with a hb, so i can say yes it can happen but like they said to me they dont know why this bleeding has happened. But i do strongly admit go to hospital if you do bleed to get checked asap x