I don’t know if I have it

Mo

Im only 16 but, I have been getting really bad pains in my lower abdomen, my back and my kidneys since July 2019, at first they thought it was a kidney infection so they gave me antibiotics for it but it didn’t help, then they said it was something to do with my periods so they put me on the pill but that made it worse, so they took me off of it and said that it is something to do with me having low ion so they told me to take ion tablets, they then said they were going to try different tablets and injections but they never got round to it, so I went back to the doctors and they booked me an ultrasound, so I went to that on the 2nd of January 2020 they said they couldn’t find any thing so they said they would send off photos from my scan to see if there is anything wrong but I haven’t heard anything back from them and every time I try to make a doctors appointment they say they don’t have one and I’m in so much pain does anyone think that this is a sign of endometriosis because my mum thinks it is and do they have anything that I can do or take to take the pain away because i was prescribed naproxen and even that didn’t take the pain away