lisa&alex said:i guessed u might lol.. kim u dont need a full bladder.. actually going in there with a full bladder will make ur scan painfull...i had my 12 week scan with an empty bladder lol..plus ur further than dead on 20 weeks..have a wee before u leave the house and just take a drink with you so u have a bit in there.. u cant possibly hold ur wee in for 30+ mins.. most women will tell u their 20 week scans last more than 30 mins mine lasted 1 hour 20 mins lol.. i was almost peeing myself by then...lol..