menstrual pain // period pain?

so, alot of reading material have in short said this:-

1. women who exercise regularly experience less menstrual pain
2. exercising helps relieve menstrual pain, hence despite the sluggishness you feel, you should exercise because you would feel better. 

i would like to say, the above 2 statements, well for myself at least, is completely utterly FALSE! 

i am a first-hand victim of excruciating period pain - especially on the inaugural first day. if i kick back and don't do anything on the day, it is painful but i can live. but if i run, the pain becomes unbearable. the pain is in both my abdomen and my lower back. after my run, i will turn ice-cold. cold sweat will pour. and i will fell like i went to hell and came back alive again, i kid you not. hence making the second statement false. and the first statement, well dude i exercise regularly, and really, if this pain is considered less, i'd hate to think what is the more i would experience. 

but then again, i love running so much. so i still go do my runs. and i regret it every single time after my run. and yet i do it again the following month. i'm weird like that. 

and then i tend to think alot and come up with scary conclusions. the more i read, the more it seems i have a chronic disease called endometriosis which affects 1 in 10 women. 

so, is it just me? am i the 1 in 10? or is it perfectly normal to experience this pain whilst running? 

something someone should do a thesis on!