So confused! I get to wait all weekend long to get answers

But had my mid-preg ultrasound Mon and found out together with fam today what gender was. Have two pics that "show gender" - one pic has typed on it "I'm a boy" and the other pic "I'm a girl". What the heck?! No one has said a word to me about twins before today?! Is that common to not find out until 20 weeks...even with an ultrasound (and pics) at 9 weeks that were of just one baby??? TIA - stressed out mommy over here! I am quite a bit bigger this time than with my 1st child - but I never did lose baby weight from my 1st either. Hah!
Re: Twins?!
And of course this has to happen and force you to wait over the weekend - the suspense would drive me nuts!!! Good luck! And if it is twins, we have a weekly checkin on Thursdays.
Missed M/C natural cycle 10/2013
DX PCOS 3/2014
2 cycles Clomid 50 mg + Ovidrel + TI
1 cycle Clomid 50 mg + TI - no response stair-stepped to Clomid 75 mg + Ovidrel + TI
1 cycle Clomid 50 mg + Ovidrel + IUI
1 cycle Letrozole 7.5 mg + 150 mg Follistim + Ovidrel + TI
1 cycle Letrozole 7.5 mg + 150 mg Folistim + Ovidrel + IUI
1 cycle Letrozole 7.5 mg + 150 mg Follistim - no response, repeated Letrozole 7.5 mg + 150 mg Follistim + Ovidrel + IUI = success! 12/2014
Beta 1 - 15 dpiui, 324, Beta 2 - 17 dpiui 750. Twins!!
My Blog: pcosandpizza.blogspot.com
Wow - this is crazy! However, I have an ex-coworker that found out at her 20 week anatomy scan that she was having twins. The tech said something about twins and she said her, her hubby and their son were all in shock! Then the tech was like "You didn't know you were having twins?" And she left the room for a few minutes to let them gather their thoughts..lol So I'd say, yes, it does happen where people find out at 20 weeks that they're having twins but if you had a dating u/s at 9 weeks, you would think they would've been able to see two babies then.
Anyways, PLEASE update us! I'm anxious to see if you really do have twins in there or what their explanation is for the goof up!
:-SS