@KikisGirls @RubyNala97 @WVduckchick @ChickNanny13 @HappyDancin'
Thank you all for the info and replies. This is going to be long so feel free to skip it all, but... you should all read the last part, just to give you a little smile!!!
~I gave headings to different sections so you don't have to read the whole reply!!~
Egg with dark spots:
Egg was 100% dead
it started to smell. It shocks me how quickly it can go from perfect to gone in just a few hours
Mallard question from @WVduckchick :
I got an assorted shipment from Metzer Farms, and of the assortment, two were mallard eggs. One was never fertile, the other one is the egg that died last night. [SIDE NOTE: after watching some videos of their set-up, I would never purchase from them again... I would not support their business, the ducklings are crammed together so tight they hardly have room to move! Do any of you have experience with Metzer and can reassure me that they are actually good and humane to their ducks? Their site does give decent information but I have done hours upon hours of outside reading before purchasing my eggs.]ß
In terms of the humidity @KikisGirls :
I actually have two humidity/temp readers that I bought before even getting the eggs, because I knew that the incubator reading would likely be inaccurate.
I calibrated the incubator thermometer as well as the two others, and the two others are vastly better at detecting correct humidity levels.
Picture @RubyNala97 :
The pictures of the dead egg are on my phone (not my laptop from which I am writing) so I will try to post those later (if I don't post them by Monday, someone remind me!)
If you want to know about my current losses:
I am just so anxious that the others will die too! Started with 12, down to 7. One was infertile from the start, one had a crack which I covered with wax but the egg soon developed a blood ring, and the other two never developed. Last night was death of the fifth egg. I waited until day 10 to remove the first egg which I was certain was infertile from the start. I separated the other three "bad" eggs into the separate incubator and left them until day 14 (yesterday) just in case they were slow to develop. I am assuming by now I would have seen even the slightest hint of life? Once I removed those three eggs, a few hours later I noticed the mallard egg had no movement and its veins were turning black, so I moved him into the separate incubator.
About my hatching process:
I have been sooooooooo so so so so overly cautious with these guys it's insane. (if you can't already tell........ this is my first time ever hatching / owning ducks [and any sort of bird for that matter] so I still have a lot to learn), but hopefully all goes well and the seven remaining will hatch
Here is something to give you a smile....
I have always been obsessed with ducks since I was little, not sure how this started. I obviously don't remember this but my parents always used to tell me the story of my first word.....
My first word was QUACK! My mom said they were all standing around me because I was silently looking up at them all and apparently it looked like I had something really important to say and that I was frustrated because I couldn't communicate it..... She told me that they kept saying "come on, what is it? use your voice and tell us!" (again, I had yet to ever talk) and apparently I just stared at them all with a very serious and concerned face and yelled out, "QUACK!!!" and they all thought it was the funniest thing...
(i have a wildly huge rubber duck collection and a miracle story about one of my rubber duckies, so let me know if you want to hear that story! My profile icon is actually a picture from my rubber duck collection! i currently have over 500 rubber ducks)
darn it!), they are due to hatch Sunday (IF any hatch). Afterward, its time to calibrate! I'll never set another clutch in the incubator without calibration first! Thank you, again!
I love it!! The rubber duckies are awesome. The story of finding the original is so cool too! Thank you for sharing. 
