Endometriosis question

Hi you guys. 
I have a lot of concerns about my period right now and I've been doing research on endometriosis and I seem to have a lot of the symptoms. 
I have an oddly high pain tolerance so I'm worried that I'm overlooking something that's there because I really am in a lot of pain already. I also have some pain during sex but I don't know if it's the same kind of pain. Could someone describe it to me and give me some advice? 
Thank you!

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