Recent gallbladder Surgery leaving me feeling awful

Sorry you went through this!  It's all very challenging to have complications when you expected surgery to be followed by healing, and getting well.  

If your diarrhea is loose stools surrounded by yellow bile, it's because your gallbladder can no longer store and measure out the bile that your liver is making.  Instead, it's being excreted into your small intestine and there's too much of it for your body to absorb. It might also be backing up into your stomach, which can give you nausea.  

However, it might also be a reaction to the antibiotic, because it's harmed the good bacteria in your gut.  You can take probiotics for this, to help increase the amount of beneficial bacteria.  What antibiotic were you given first, and what where you given the second time?  

Try to eat small, frequent meals and stick to low fat, if you can.  If your diarrhea doesn't settle, you might need medication to absorb the excess bile in your system.  I've taken it since 2009.  It's called cholestyramine.  

Itching is a symptom of jaundice and that your liver is struggling. When a stone blocks the common bile duct this can happen. It happened to me pre op.  You do feel very unwell with jaundice. Do you have other symptoms such as pale stools and dark urine, yellow skin and are the whites of your eyes yellow?