aggie - I find your post extremely worrying. Am beginning to think we no longer have an NHS - just a Corona Virus Health Service.
It is so important to find out exactly what sort of infection you have, and the ONLY way to do this is have a sample tested.
Last summer (thankfully before CV19 had appeared), I had almost continuous bad infections. Each time, would have a 7-day course of ab's, which helped, but did not get rid off. Within 48 hours of ending a course it would flair up again, and a different ab was needed. Was also using Vagi-fem daily.
After five weeks, and four different courses of anti-biotics, requested from GP a referral to hospital - this was treated as urgent and so, a very short time later I had a camera check on my bladder which showed a small growth.
Within two weeks I was in hospital and had a TURBT - removing that growth, which, fortunately, was benign. I was also put on a low daily dose of an anti-biotic for several months.
Since that I have only had one attack of this, and that responded well to a weeks course of anti-biotics.
I had my very first attack of cystitus on Christmas Day 1969 - five weeks after the birth of my first baby. Did not even know what it was. Meant a trip to A&E near my parents home, where we visiting. Anti-biotics dealt with it. Next attack was just after birth of third child, I was in hospital at that time,as she was premature.
Over the next few years, these would occur, seemingly with for no reason, always needed anti--biotics to deal with. No samples bothered with back in those days,. In fact, quite illegally, I was actually given an undated, but signed prescription for anti-biotics, by my GP so that I would not have to get an emergency doctor should this occur over the weekend when he was closed (he had to pay for patients to access emergency doctor) - okay this was back in the 1970's/80's.
They did increase after I was 60 years of age, but a good and sympathetic GP practice and their receptionists, meant I could get a prescription for ab's very quickly. I learned to listen to my own body with regard to this, and not try to ignore the early symptoms. Paracetomol would help to ease symptoms overnight .
I am not a great believer in either Dannose tablets or cranberry juice. I still use Vagi-fem on a weekly basis, have sample bottles at home, ready for use if necessary, and ensure that I do always drink several litres of fluid every day.