pulmonary side effects

for the first few days taking the medication, i simply felt slight nasea and headaches ... the forth, fifth and sixth days into it, I threw up acid and felt extreme fatique and mild stomach pain. the seventh day - stomach pain, slight nasea. TODAY - (i took a 7 day prescription plan for it/100mg/day) - the eighth day, having, of course. not taking any pill as the plan ended last night, i had MAJOR chills, HIGH fever, chest pain, nasea, weakness in my body, and fatique. my uti seems pretty much gone, but there is still a little discomfort there and very mild continuous burning. i also still feel weak and my chest feels tight. MY QUESTIONS ARE:

1) WILL I EXPERIENCE THESE SYMPTOMS AFTER TODAY?

2) ARE THESE SYMPTOMS COMMONLY EXPERIENCED RIGHT AFTER THE TREATMENT HAS ENDED?

3) SHOULD I BE AT ALL CONCERNED?

4) WHAT CAN I DO TO ALLEVIATE THESE SYMPTOMS?

thank you!

renee