Good Luck
I suffered from endometriosis for many years without knowing that was what was going on. I'm not sure what "tests" they are talking about doing as endometriosis doesn't really show up on the normal ultrasounds, cat scans, etc. It is also possible that you may have a cyst(s) on your ovaries or something like that which can be seen by tests and removed surgically to improve your health greatly. It sounds like you definitely want children, so I encourage you to find out that there isn't something else going on by going through the tests. Then a common treatment for endometriosis is to take birth control pills or to get pregnant as both tend to decrease the symptoms and prevent it from spreading. I think of endometriosis as spider webs being developed inside your abdominal cavity that attach themselves to everything and can cause all kinds of problems by wrapping themselves around your internal organs. It is also the largest cause of infertility. Therefore, I would encourage you to read all you can about it as there is lots of good information from the national association and other websites. I underwent 5 surgeries including a total hysterectomy before I got relief from it. However, I had an extreme case which is very unusal, so just don't gnore it as it should be taken seriously. My prayers go with you in this as you are so young.