The cause for vaginal itching
can be the fungal infection
whereas the cause for anal itching can be because of worm infestation. Take albendazole in place of secnidazole and Azithromycin
is antibacterial and unlikely to help the fungal or parasital infection. Hence for the vaginal itching take antifungal medications as oral medications as well as as vaginal passary or ointment for local application. Clotrimazole
has good results for local application and fluconazole for oral. But please show your GP for appropriate prescription, doses and ways to use these medications. Good luck.