Help please

I'm awaiting second lot of surgery a week on Wednesday, ive had some bleeding after my first period so went to doctors who took swab of my cervix where the first surgery was taken and it came back I have thrush in the cervix on the actually surgery bit. I was told to use cream on outside but I havnt got it there. If its still spotting from the surgery bit then I can't use cream inside to clear it can I? m still bleeding after a week but they won't give me antibiotics to clear the infection. I got the infection the day I stopped antibiotics last time. I can't see why they can't give me anymore. The thing is she said I need two weeks of treatment but I don't see what I can useĀ