I mentioned to a friend of mine (we are both around 20 weeks)that I had a prob at 20 week scan with fluid levels in babies brain, she said that she had the same thing but her levels are higher than mine were. She is in a right state as she has convinced herself it is because she did not realise she was pregnant till she was 4 months and was still smoking reefers. I told her I don't smoke at all any more yet we have the same prob - is there any way her smoking could have made the problem worse? I don't want to google it as am trying to stay away from that so I dont freak myself out about potential brain damage till we have re scan in 2 weeks as google often makes problems seem worse. What probs could the evil weed cause as am trying to get her to stop but she says she is so stressed now she has to have one or two a day (huge improvement on before)?