I've had lower back pain in my right side for 4 months now - a pain that feels it's pressing near my hip bone, above my buttock or on my ovary. I have also had irregular periods for the past year and had some spotting when the pain started. 

I had a smear test in the first instance, which came back as HPV and borderline abnormal cells. I had a colposcopy later on and a biopsy taken, which confirmed that the cells had gone back to normal so no treatment or follow up was needed. I also had a swab taken for STIs during this time and urine test for UTI, but all came back normal. 

I then had an ultrasound which took ages because of Covid. Doctors were pretty certain I either had an enlarged ovarian cyst or PCOS, however when I had the transvaginal US, everything looked clear and healthy. I had bloods taken a month ago to look for tumour markers, kidney and liver function, thyroid and hormones, but again all normal. 

I have another GP appointment on Thursday in which they're actually going to feel my back and perhaps do a test for ceoliacs disease, but just wondering if anyone else had these symptoms and what I should ask the doctor for, such as a CT scan or another ultrasound to be sure?

I don't want to be a hypochondriac but I know something down there isn't right! Oh and I'm 28 if that helps.