I have my scan on the 3rd of feb when i will be 13+1. also very nervous even though its my 5th pregnancy (third baby). It is such a long time to wait to know if everything is how it should be. If i were you i would phone the scanning department and check if you need to have a full bladder or not. on my letter, it says i do NOT need to have a full bladder. thank god. coz there is nothing worse than feeling sick, bursting for a wee when your really nervous and have someone push on your bladder. it makes the scan hard to enjoy when it should be a happy time! If they say you do, i would just try to drink a bit but not make yourself bursting. Although this depends whether there are delays in the waiting room. It's happened to me before and i was nearly sick because i needed to wee so much! good luck!