rear side pain

Question
I have a 9 mo. pbp and she is the most important thing to me, unfortunately in my area I have a very small selection of vets to see and the one i go to I am not crazy about. Well anyway I noticed my pbp(Roxanne) had two puncture wounds on her side(we have two dogs and one other small pbp..but they are never left together unsupervised). I do not have any idea where she got these wounds but I took her to the vet first thing this morning to figure out what was wrong. Oh, and also she is falling on her back side and cant seem to stand up, every time she falls she screams in pain and it really hurts the both of us!! Well, the vet gave me some pain medication and sent me home, he said she seemed fine and the funny thing is she did seem fine when we were there but she obviously is not and I don't know what to do...I NEED HELP!!!

Answer
Two small puncture wounds close together generally - but not always - indicates a bite of some sort. The size of the punctures generally - but not always - gives a clue to the size of the animal that bit. A bite from a cat, dog or coyote will leave larger punctures than a bite from a rat or a spider. The fangs from a snake bite generally - but not always - leave an identifiable wound. I am assuming your vet ruled out snake bite.
Dippity Pig is a strange ailment that comes and goes very quickly. Often it's accompanied by welts or sores that may ooze a pinkish liquid. Nothing appears wrong except the skin  inflammation, but the pig will act as if he is in severe pain, screaming and "dipping" the butt towards the floor or "collapsing" into a sitting position. The condition never lasts longer than 72 hours, and frequently appears and vanishes within 24 hours.
The symptoms of a venomous spider bite, such as Black Widow or Brown Recluse bites, may resemble Dippity at first. The big difference is what happens after the first 48 hours. If the problem is Dippity, the pig will probably be back to normal within 48 hours. If the problem is a venomous spider bite, the pig will be showing signs of illness such as fever and lack of appetite.
If the problem is Dippity, the skin will heal within days. If the problem is a spider bite, the skin will get worse. The area around the bite will swell and get puffy, then the dead skin will crackle away leaving pink, tender new skin beneath. It may take as long as a month for a pig to recover from a venomous spider bite.
Bites from other animals, like dogs, cats or rats, can become infected easily, so keep them clean if possible and apply any antibacterial wound cream made for people. Pig skin and human skin are so much alike that pig skin is often used on humans who need skin grafts, and because pigs do not lick themselves like dogs or cats there is little danger they will swallow any ointments applied to a wound.
At this point, the only thing to do is wait and see what happens over the next 24 - 48 hours. If it's Dippity, you'll see obvious signs of improvement. If it's a venomous spider bite, the pig will get sicker. If it's an animal bite, the pig should start acting better, but the area around the puncture may show signs of infection.