So very stressed

So, yesterday I started dealing with the mortgage paperwork. I read through all the documents on Sunday after I finally got them. Then as I was going back over them while I signed them, something seemed off. Looking at the numbers given by the bank, the money due up front from me was insanely huge. Like double the max money I had available to spend. So I tried to get a better idea from the lender about it, and turns out she completely flubbed the numbers. Left off $1,000 of the earnest money and put in the wrong information for a number of other areas. Now, the number is in a more appropriate place where I can handle it.
Even so, those wrong numbers caused me an enormous amount of undue stress. This whole thing is really throwing me for a loop. Luckily I've only got about a month of all this, then it'll become a different kind of stress.
I'm really worried about screwing something up, or something going totally wrong and me being out all the money I've put in and owing even more cause of something that could have been avoided.
On top of that, today is the inspection of the home. I'm going to try to put together a video of the home, like a walkthrough and introduction to the premises. Also, because I'm so worried about money and being ready to put money down on the house, I'm going to be working all weekend for overtime. I might actually just end up working everyday this month if I can. It's gonna suck, but in the end I think it will be worth it. Luckily I have 3 paychecks till the closing date, so I'll be able to sock away some money.
I'm just going to have to live off credit cards for the next month and spend as little actual money as I possibly can. I'll probably have to raid my Dragoncon savings for this year to make sure I have enough money at the end.