That is scary stuff-- glad you got yourself in and are being treated. Nothing comes before that!
When it comes to your health, don't worry about the bills now. Do talk to the hospital later when you are better and ask for them to write off your debt. Many hospitals will do that, but only if you ask! And in worse case scenarios, bankruptcy is always an option for later - it is there for situations you can't control, and life threatening illnesses are at the top of the list. Put those worries off until you are well. Just get well. And keep getting the care you need.
Flagyl is an excellent medication for deep tissue infections, especially in the pelvic area. ok to take with or without food. Don't know if you drink, but make sure you avoid alcohol until you are healed.
Zovirax is topical acyclovir. They are probably being cautious, since an infection can make you immune compromised and allow herpes or cold sores to go out of control.
Cleocyn is clindamycin. Often used for vaginal infections. Slows or stops the growth of bacteria.
Be sure to take all of your medications as prescribed until they are done; this is especially important with antibiotics. If you aren't seeing improvement soon, you will want to get back into the ER for more IV or additional prescriptions.
Oh, and hydrocodone is for the pain. It can make some people constipated, so a stool softener (ex: dulcolax) can be very helpful as a preventative.
You'll want to get in to your primary care doctor as soon as you can, but keep using the hospital if that's the only way you can get care. In the US, hospitals are required to provide care to all regardless of their inability to pay.
Feel free to PM me when you are well if you need advice about ER bills etc. I can share my experiences.