Endometriosis?

Can any of you with endometriosis please let me know how you felt when it first started?

I was fine yesterday just finished my period last week but this morning I got up and I felt uncomfortable and really like anxious but I was able to get to my recliner so I sat here for awhile and the pain started to get worse i felt like I wanted to puke so I tried to get up to get a thermacare patch and some Pamprin and it was painful I could barely walk in trying to stay calm but I still get a rush of anxiety is this the beginning of endometriosis?