Antibiotics kill off not only bad bacteria, but the good stuff we need as well. That's why nowadays it's recommended that if you have to take antibiotics to take probiotics as well. It's not a magic pill that you take only once though - you'll have to take it for a long time, and you may have to try a few different brands to find the one that's right for you.
You really need to see a doctor about this. It sounds like you have an infection (possibly among other things) that needs treating. The longer you put it off, the more difficult it is to get it under control.View Thread
This bizarre problem was only discovered a few years ago but is growing as the ticks spread from the Southwest and the East to more parts of the United States. In some cases, eating a burger or a steak has landed people in the hospital with severe allergic reactions.