Generally, it's not the worst case scenario. You could have cervical cancer that's treatable and awful but by the end of the year you're cancer free and life is good again. You probably don't have cervical cancer but some infection, some much more minor problem that will be sorted within a few weeks/months at the most and life is good again.
I was sort of but not in your situation last year. Tests after tests in 2023 to be diagnosed with (oesophageal) cancer in the December and starting treatment in January. Exactly a year ago I was waiting for treatment to start and worried about how I'd deal with it all. I also faced the worst case scenario because it seemed to me that if I could do that and find a way to accept the possibility then I could get on with using my energy to deal with what was happening in the present. I don't know if you can do that, but my god it helps. It helped me get through all of last year. Treatment got rid of the tumour but there was another one almost immediately afterwards or maybe it was growing along with the first one. Who knows! That time I thought I was definitely done for and went face to face with it again and accepted it. Then I had to have a stent which perforated my oesophagus and I found myself on an operating table being prepared for emergency surgery that I would die without and also that I might die with. So I faced it again. Here I am in 2025, cancer free (the op was to remove my oesophagus and replace it by making a new one out of my stomach. I now have a tiny stomach), recovering from surgery, a bit feeble, but alive and almost well and, and, and ... I feel I was able to get through all of it by facing the most awful thing, accepting it and then dealing with what was in front of me. I have no idea if this will help and I'm sorry for making it a bit too me, me, me but I just know that my weird form of "I might die!" mindfulness helped me so much. I was, at times, so fucking Pollyanna about everything that you'd want to slap me to stop me being such a little sunbeam for five minutes. Seriously, I wanted to slap myself.
I also had good friends around and my god that helped. So, lean on your husband who loves you and wants to be there for you. Do whatever works for you and you'll get through it. On a more practical level, give your GP hell - well not hell, but be firm, take your husband with you if you feel he can be firmer than you - and insist on getting tests done because as helpful as facing up to the worst and accepting it might happen is, the best thing is knowing exactly what is going on and for that to happen you need either a diagnosis or a referal leading to diagnosis. Best of luck with next week. You're stronger than you think. We all are.