A week ago, I found out that our baby had no heartbeat and had probably died about 2 weeks previous. The doctor was ok with me waiting to see if I could miscarry naturally, which hasn't happened yet... but even weirder is that I still have all the symptoms of pregnancy. I have heartburn/nausea and my boobs are as sore as ever. Has anyone else experienced this with a missed miscarriage? It was bad enough feeling sick when I was pregnant, but now it just feels like adding insult to injury. 
                 
                
Re: When do the symptoms go away?
Your symptoms will most likely not go away until you physically miscarry. Depending on how far along you are, if the placenta had taken over, it is producing your symptoms and is also partly why you have not miscarried yet.
I had a missed miscarriage in November, baby died at 10 wks, I didn't find out until 13 wks. The placenta had already taken over and it has kept me feeling symptoms that whole 3 wks. I did start to miscarry naturally about 2 days after finding out about everything but still opted for a D&C by going to the ER. All my symptoms were gone within a week.
I'm sorry you are going through this.
BFP 11/23/10 MMC @ 7w3d Discovered @ 10w2d D&C 1/12/11
BFP 7/6/11 Our Lucky Charm born 3/5/12
My story has been just like the pp's...twice.
I completely understand your feelings of anger. Boy was I angry at my body for doing that to me. How dare I have to suffer through pregnancy symptoms when things had ended. Sadly, the symptoms only went away once I started to physically miscarry. For me, I miscarried exactly one week after finding out both times that I had late first trimester losses. Both in the 11th week. I am so sorry you are going through this. It sucks. I hope your body starts to cooperate with you soon so that you can take the next step forward. If you ever need to chat, I am here.
Thanks so much for the replies and kind words. I was kind of afraid that was the answer, but at least now I know what to expect. I've been going back and forth between wanting to do it naturally/wanting to move on and just get the D&C, but with nothing happening and feeling crappy all the time, that's making my decision easier.
Thanks again, and
 to you all. 
The Daily Nugget
Cycle 12, IUI #1 - 33m post wash 10/15/10 = BFN
Cycle 13, IUI #2 - 15m post wash 11/16/10 = BFP, missed m/c, D&C 1/3/11
Cycle 15 - 18, IUI #3-6 = BFN
Cycle 20, IUI #7 = BFP!, missed m/c 9/14, D&C
DE-IVF Aug. 2012: ER 8/30 11R, 7M, 4F; ET 9/4 returned 2
Beta 9/18 #1-820, #2-1699, #3-7124
10/1 1st u/s measuring right on track, 125 bpm