As you know im another need to know gal..
I found out with the other 6 it helped me named them and bond with them and prepare myself to meet them..

thats why im finding out tomorrow too, i think i wouldnt cope if this baby doesnt have private bits for all to see tomorrow lol

but everyone is different, if u think u may regret not finding out, get the sonographer to write it down in an envelope, or even tell ur partner.