sick pig

We just adopted a 10 month old, female Pot Belly/KuneKune mix pig 5 days ago (she was not in the best living conditions and not getting attention).  Today she is very lethargic and her vulva is enlarged with a clear fluid dripping out.  She had a small amount of diarrhea last night but stool is normal now.  No vomiting, no fever, no coughing, just very lethargic.  She will eat, but is not as vocal as normal.  In her previous home she was confined to a pretty small area with just dirt, and a commercial pig feed.  Now she has access to pasture, hay, and being fed fermented grain with just a small amount of her old food.  There was some old dried up grain scattered about in the pasture area, if she ate this could it be Mycotoxicosis?  All vets are closed today, maybe she just has a belly ache and I'm overreacting.  All input is greatly appreciated.

How hot is it?  Does she have access to water to lay in?

Her temp is 101.4, HR is 100, resp is 20.  I could not detect any abnormal lung sounds, she does not have a nasal or eye discharge either.  She did get up to move to a shady area and got up to eat a small piece of bread (I baited her to see if she would respond).  Although she ate, she would not drink and is still very lethargic.
She does have access to a mud pit, but she doesn't seem interested.
Thanks!

Hi Kathleen;

Of course the vets are all closed... seems to be a rule about when animals get sick, the vet will always be closed.
All you can do is keep an eye on her.  Antibiotics are an option, but only if you have to.
Fermented grain could have her tummy upset.
Could she be going into heat ?

As the day progressed, it does seem that she has an upset belly.  I've heard her pass a lot of gas, and some burps that were really stinky!!  She got up several times during the day and just kind of stood around, she did chew a little grass and ate her dinner.  She also passed some normal stool, no more diarrhea.  I was thinking that she may be going into heat, but I read that they become very vocal and agitated, not depressed and quiet.  I was thinking the Mycotoxicosis because on a medical site it said that an enlarged vulva can be one of the signs (strange).  She is still very quiet (she is usually very talkative), and depressed but seems better.
Hopefully she will be improved in the morning.
Thanks!!

So, this morning she seems better, she is more vocal and is moving around more.  However, she now has a milky white discharge from vulva (there is no odor, and it doesn't seem infectious).  She still does not have a fever, and is eating/drinking/pooping normally.  She will come over to me and talk and when I pet her she seems to go into a trance and just stands there for a few minutes and then seems normal again.  Could she be in heat?  
Thanks for any advice!!!