Then you need to discuss your anxiety and depression with your GP or find out where your walk-in MIND drop in centre is, I found them very useful 2 years ago when a friend died suddenly and it impacted on m y mental health.
The AB you have been given is I believe one that covers many conditions? You may be tense due to worry so try taking a pain relief medication, I find that helps me if I have aches and pains due to tension.
Don't drink too much water! The first P of the day may whiff and should be darker than the rest as the bladder hasn't been emptied as often. Urine should remain straw coloured, any lighter and the body is over-hydrated. There should be no smell during the day though mine often smells of sulphur or is simply smelly. I have to keep an eye on it as I know that I don't drink enough.
In the mean time keep the vagina as moist as possible, I use KY Jelly around the outer lips. Some find 'yes' products or 'sylc' useful, if you put the products into the search box you may find something that will suit you.