Our New Hope, a Third Pregnancy

My wife's mother, father, and 12 year old sister came to celebrate my wife's 25th birthday. They came up a day early for the Sunday party. Her Mom discovered a home-pregnancy EPT test that we had just bought at the grocery store. The cat was somewhat out of the bag now. She knew that we thought that we might be pregnant. Sunday morning, took the test. Yes, we are pregnant again. Third time's a charm... I hope.
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We let both of our families know on Sunday that we were expecting. Everyone congratulated us, but I could tell that they were all worried.
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My wife had been taking baby aspirins for the last two weeks of every menstrual cycle, just in case she were pregnant. She'd also been taking prenatal vitamins w/ folate, etc. This was to prevent a miscarriage due to the MTHFR mutation.
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This all took place on labor day weekend. So, first thing, Tuesday, she called the doctor. The appointment was not for almost two weeks! I then called the doctors office myself to remind them that she had the MTHFR mutation and that it was very important to run some tests and possibly start taking blood thinners. The nurses were to talk with the doctor and call me back. They decided that my wife should come in immediately for some blood work. They took about 5 tubes of blood from her. We are not positive yet as to what tests they are conducting. The next day, they called and asked for her to come back and give one more vile of blood. We did so. I'm not positive, but I think they were looking for her homocystine levels. They recommended sticking with just the aspirin and vitamins at this time. She is to go back for an office visit on Thursday September 15 (five days from today). I am unable to go with her as I already had a business trip planned that can not be re-scheduled. I wonder if I should feel bad about not going with her? I'm afraid of what I might not hear. How much will she remember clearly enough to tell me about later? I want to soak up every possible piece of information, as I believe that knowledge is power.
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This pregnancy worries me to death. I am very scared that she might start bleeding or miscarry while I am out of town, on business. I know that if something should go wrong that she'll need me by her side, supporting her. But then again, I will usually only be a three hour car ride away... And what of her job? She will be due in May, one month before school is let out. Will this mean that they won't hire her back for a second year? I'm not sure what the policies are with first year teachers. This will take a bit of research.