T.,
You may need a probiotic to get your gut flora back in balance after the abx.
Products like Yakult, Kefir and Activia can be bought and consumed as drinks, smoothies or yogurt, respectively...
...or for better results (IMO) a suppliment can be taken. You can find these just about anywhere now...drugstores, even the supermarket in the pharmacy section.
I too hope today is the start of a turn around for you! Keep us posted.
S.C.