trying to get a diagnosis for pcos/pmos

for years i’ve been advocating for myself about my irregular periods, i have nearly all of the symptoms of pcos and one of my main concerns is my weight, i cannot lose weight for the life of me and i don’t know what to do but ive just had a blood test and all my results are normal, ive had a transvaginal ultrasound that came back normal about two years ago but i dont really know what other tests i could ask for

im just so frustrated and tired because how can i have all of these symptoms and issues without some kind of diagnosis, i know that it probably sounds like i *want* pmos lol, i dont but its more like i want clarity and an actual reason for all the things ive suffered with you know? im also in the uk so i guess im making this post to see if anyone else is going through this