Help! Endometriosis pain description

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I've been having pain in my lower abdomen and sex is seriously painful, I had a baby a bit over 2 months ago via c-section so I don't know if that's it. I have an appointment on the 15th but I never got a pelvic after giving birth bc they messed up my appointment and gave it too early then I had to cancel my 2nd appointment bc my newborn was ill in the hospital for a week. So maybe the pain is related to that. I have no fever or foul smell or discharge so it's not an infection I don't think. Just want to know what endometriosis feels like if it's possibly that.