Kidney disease. Checkup should i take?

Hello doctor...this is shreya mishra...i had urinary tract infection from one month i had take usg but report was normal only showing in report bowel loops.. And i had urine test there pus cells are 7-8 hpf and epithelial cells are 5-6hpf i m taking antibiotic tablet like cafex and taking some homeopathic medicine.. But suddenly i had kidney infection but my doctor is giving me cefex tablet only.. But I'm taking homeopathic Medicine too i feel vomiting all the day. I feel fatigue sometime and sometime feels very energetic... I have flank and ahooting pain both side of abdomen...and my pelvic also hurts... Having green urine only in morning...also itching on my kidney side... Is this the sign of kidney failure Or damage? Which type of checkup should I take? Do I need blood test.. Tell me what i do and how to check up my kidney..?? Plz help me I'm really depressed..