I've recently being treated for PID but I think its more endometriosis could it be both?

I've had bad pelvic pain and cramps since I started getting my period but it has steadily gotten worse. It's feels more in the bone and left lower back. I had a four-wheeler accident years ago and thought I may have hurt something and it never healed but MRI showed nothing wrong, and I was told just do therapy. Recently, the pain has increased to where I have trouble moving in certain positions and no one can touch my lower spinal area without pain. Just pushing on the pelvis hurt almost like a very sharp pain. I went to a clinic and they "diagnosed" it as PID but I've never had an STD or infection. It was such a quick visit I don't think they had time to actually do a proper examine and the GYN said everything looked and felt normal. So could it be both? PID? or am i right in endometriosis because it's been going on for years and pain has become normal for me but if its getting worse that must mean something?