Thanks for the reassurance everyone. I figured if it was fescue related she wouldn't have a bag at all, but I had to ask to make sure!
I am definitely going to put my trust in Mary and quit questioning everything, unless it needs to be.
Last night was uneventful, again. But I did manage to sleep for two hours and then check on Mary, so I am feeling a little more rested today.
My brother has also agreed to watch her throughout the day for me so I can take a nap for a while.
I do have some exciting news though! This morning I tested her pH with the pool strips and it was lower than yesterday!!!! Normally as soon as the drop touched the strip it went dark immediately, but this one took a second and then went really light green! Her one teat also looked shiny and it had some milk on it- my waxed, but maybe that's what it is doing? Her milk isn't very sticky yet, but it comes out super easy.
I think I will use my last foaltime strip tonight and see what it says
The rain is supposed to let up this weekend, so of she has it tonight they won't have to stay stabled for long. I actually haven't been closing her in there at night, because it seems to stress her out a little. She would rather have access to her grassy run then be shut in there all night- so hopefully when it comes time for foaling she will do it under a roof and not out in the middle of the run.
I will get some pictures later today and update you all. I'm going to test her pH with the pool strips a couple more times before tonight, and then for the last test I will use a foaltime strip- keep you fingers crossed it stays yellow!