Please help been in agony for 3 month

Early Feb i got a stabbing pain in my lower stomache/groin. I thought it would go but it lasted for a few days so i decided to go to the docs and they said i had a urine infection.They gave me antibiotics and told me to rest a week later the tablets had not worked and the pain had spread to my lower left side of my back, I went back to the doctors and they give me more antibiotics. They made it worse. The pain got so bad i had to go to a&e where they done bloods & urine and said it came back fine and to make an appointment with my doctor. I then got put on more antibiotics they did not work and i ended up back in A&E as the pain was horrendous. I then went back to my doctor who give me tramadol & naproxenand told me to rest while i wait for an ultrassound scan to be done. I went to my ultrasound and it said my left kidney was slightly dilated and the problem might of been a stone thats why i was in so much pain also i got diagnosed with polycycstic ovaries (which i didnt know i had). They told me to just keep on with the painkillers until it passed. I then realised i was bleeding out of my bum and my poo was black i went straight to the docs he told me to stop taking the Naproxen as mixing it with my Setraline(anti depressnets) Made me have a higher chacnce of getting internal bleeding. I came off them and was fine. I kept getting indegestion and the back plain was still there.. I have not been able to go more then a few steps without stopping.The pain has been so bad sometimes i threw up. I went to A&E again and they kept me in overnight and did a cat scan where everything came back normal. I got reffered to the pain management centre which didnt help. Im stil in horrible pain now the last time i went to the docs on Wednesday he told me not to go in for 2 weeks he thought i may have IBS which i honestly dont beleive i do because i dont get bloated,, i started taking the medication for it and i couldnt lift my head of the pillow i was throwing up and had diarhea and my poo turned black again so i stopped taking them immediatly he actually made me cry because he was trying to tell me to just get on with my pain which ive tried and i really cant.. I feel like their ignoring me now and that its all in my head. But ive lost weight through not eating from being in pain and i seriously feel like i want to end it all just to be out of my misery. Everyone has noticed a change in me, I cry myselfto sleep most nights (when i can sleep) Because m just in so much pain. Please help! oh also havnt had a period since september