is my mare really pregnant?

Question
QUESTION: I had my mare sent off supposed to be for a week but she wouldnt allow the stud to mount her for the first 5 days so they kept her another week. they did live cover 4 or 5 times. this was the first week of august 07 when she auctually got mounted. we bred her to the same stud once before and she didnt take. i had her ultrasounded for that. i called my vet to have her ultrasounded again but their machine is broken and they may not get a new one. so i had the vet come out to palpate her and see. he vet checked her 25 days along the begenning of september. he wanted to come back out in two weeks and checked and said she was still in foal. then came back in two weeks and said she was still in foal. my questions are
1. why would the vet need to come out so many times
2. is it normal for a mare 2 months pregnant to not want to eat sometimes. like once a week.
3. when should i expect her due.
4. when will she start to show that shes pregnant.
5. can a vet misdiagnose a horse being pregnant when she isnt?
6. does the WeeFoal and Pregnamare tests work all that well?
thank you for your time...

ANSWER: Covering your mare numerous times may be helpful but it also can cause irritation which could make a mare lose her embryo or retain fluid.  Even the best vets can sometimes fail to find a pregnancy.  Sometimes mares can be checked safely in foal, only to lose it a few weeks later.  Perhaps that is why the vet wanted to check often on the status of your mare. It is not usual for any horse to refuse food unless there is a problem.  Perhaps she needs her teeth floated. Being pregnant should not cause her to lose her appetite.
    I do not have any information about the test you refer to. Normal gestation in a mare is 342 days.  332 days is considered early normal but it is also normal for a mare to carry for a year without any problems. Good luck and I hope this information has been of use.

---------- FOLLOW-UP ----------

QUESTION: she jsut turned 4 and had her wolf teeth removed before i got her when she was 3 or just dosent have them yet... when do they need their teeth done at that young of an age? i have had my three older horses floated already but didnt think she needed hers done.??

Answer
Every horse should have their teeth floated and examined yearly.  It is more common to find wolf teeth in male horses than female horses.  Unless the teeth interfere with the bit, vets now don't usually remove them. The young horses including your mare may have caps from baby teeth that didn't shed properly.  This can cause problems with bitting as well as eating and the general health of the horse. I hope this will be useful to you.  Before having the teeth floated you should educate yourself on the power equipment now being used. These instruments do a superior job but...cannot be held on the tooth for over a minute without the heat buildup causing permanent damage to the tooth.  Be informed.  That does not mean you should learn how to do it, just know that it is being done properly just as having feet trimmed should be done properly.  Know what is correct.  Why pay for a job done wrongly that could cause harm to your horse?