Endo diagnosis

Hi, I’m new here and have so many questions. In September this year I was diagnosed with bowel cancer, in October I had surgery to remember this. When the surgeon opened me up he noticed that my pelvis was full of blood, I had several chocolate cysts on each ovary, the top of my vagina had been pulled up into my Douglas pouch obliterating my anterior wall, this was all because of endometriosis. The surgeon diagnosed me with stage 4 endometriosis and I have absolutely no idea what the hell is going on.
He is shocked that I could still function and hold a normal life down when the endometriosis was that severe.
Since surgery which was to remove my rectum due to the cancer and also my ovaries and tubes as well as my appendix I am getting terrible abdominal pain which I’ve never had before and it’s 4 weeks since surgery.
I guess my question is, although I didn’t struggle before I’m wondering now he’s been in and disturbed it, is it possible for me to now suffer the pain of endometriosis?