with my 1st two Ds's i never found out and my x MIL wanted to know but hahhaha he had his back turned and would never let her see LMAO (sucked in) anyways i knew they were boys somehpow i found myself buying all blue without realising it till i set up the room and same with my 2nd ds..
with ds3 i knew he was a boy cause with all pregnancies i would eat ot of ice so i knew but dh wanted to know cause he actually wanted a girl..
and with dd i found out cause i was over suprises and thyis time dh didnt want to know lol
with dd i had the same as you boobaloo!! she was always sitting down in that position and would take ages for any scan till the nurse jiggled her lol