Apparently i am the only human being in the entire state of Maine that thinks establishing chorionicity for a multiple pregnancy is important or a big deal?  The earliest i can get in to the new practice with an actual MD is next month....but i did get in with a midwife for next week.  Perhals midwife will.listen to me and my concerns.  The way things are going i really really doubt it.  feel like i am going backwards instead of forwards.  I am ready to.pull out my hair.   I have my nt scan tomorrow...maybe the tech will throw me a bone and tell me.what the darn chorionicty is for certain(i am about 90% sure they.are monochorionic) im going to be hella pissed if they end up being mo-mo (not that there is anything to be done at this.point anyway). I am going to be hella pissed if they are mono-di too....so the end result no matter what is momma is hella pissed.  Even the very.most basic of websites thalking about twin peegnancies says the first thing the provider should do is determine chorionicity.  Ugh!  I realize i need to be my own advocate (obviously), but i am just running into brick.wall after brick wall.  I know i am not the.only woman in the freakkng state that has gotten pregnant with twins....if so, i should be on the news and be the maine version of octomom.  Ugh! 9                
                             
        
Re: ugh.
Just breathe and stay strong.
It might not be very comforting, but my mother was a mo/mo twin, and they were born in the 50s. They split so late that they developed into mirror image twins (identical features reversed - what one has on the left the other has on the right, it's a stage just before conjoined or incomplete splitting). My grandmother wasn't able to have an ultrasound until very late in her pregnancy (since the technology was still very new), and the only reasons they concluded that her twins were mo/mo is because they only had one amniotic sac found during the c-section, had one placenta between them, and their cords were wrapped.
My mother and her sister were both healthy and came out just fine (other than my mother being a total nutjob over religion and politics..... but we can't really blame that on mo/mo development, can we? lol)
Right ovary removed 09.04.2012 via vertical laparotomy
Essure implant placed on remaining tube 06.13.2013; successful followup scan 09.30.2013
I'm also pregnant with twins and live in Maine! Where in the state are you? I'm halfway between Portland and Lewiston.
I didn't find out I was having twins (turns out they're di-di) until 20 weeks, so like others said it's important to know if they share a placenta, but you're still in a good stage to be finding out now. I do find it surprising that your doctor wouldn't have said whether there appeared to be one placenta or two at your initial ultrasound. The NT scan should give you a better idea, although detecting a membrane to see if they're mono-mono or mono-di often isn't possible until later in pregnancy.