I'm not sure I can be of much help as I have no experience with abnormal pap smears but I wanted to reply all the same.
It sounds to me like you definitely need to change GP. I've also had a situation recently where I was not taken seriously, and I didn't want to change GP. After thinking it over though, I realised it's a little inconvenient to do so but it's worth doing. Your health is a number one priority in life and you should get a GP who you feel comfortable with and who listens to you. If you approach a GP with the symptoms you described, I highly doubt they would send you away empty-handed. I think they would certainly do some tests to see what's going on, and to be able to put your mind at ease
If I were you, I would write down a list of all your symptoms including when they started, so you can visit the doctor with a clear mindset of what you want to say. And definitely stop looking on the internet - I made the same mistake and stressed myself out soo much! In the end, only trained professionals looking at your body can really say if there are any problems or not.
I really wish you good luck with it all! xx