I just need to let it out

Today is cycle day one. I have severe endometriosis. I just got a job a couple of weeks ago. Today I am in so much pain and bleeding very heavy and of course, diarrhea. I went into work and tried my hardest. I'm a cashier. It's so hard being the new girl because it seems like I work with some very rude head cashiers. I told my head cashier I felt like crap, she said I shouldn't say that word and didn't even ask me why I did. I found the store manager and told him what I suffer from and how sick I was and how scared I was to tell people because I was afraid they wouldn't understand. I almost started crying. I'm overly emotional due to starting femara last cycle. My hormones are out of wack. All the women did was stare at me rudely when I was talking to him. It's breaks my heart when some women are so cold to others. Now I'm upset that they'll be even more rude when I come back because I left today. Does no one understand pain anymore? Or have sympathy? the manager said everyone there was understanding but that's a lie. They treat me like I'm stupid. Idk if they've gained some superior complex or what. There's talk that those women are failing at their jobs. Endometriosis is real, and just because these women don't suffer, doesn't mean they shouldn't believe it doesn't exist. I want to work. I need the money. I'm 27, in school full time and work part time despite my illness. I'm not a slacker. I hate this disease. I want to be normal. And the thought of starting femara again this cycle bums me out bc it makes me so hormonal and so sleepy that I can't function and I have no one that understands me where I work or is kind about it. I was in the bathroom, bc number 2 from my period and was shaking so bad after i was done and all one of my co workers said was "you stink". Like, are we in high school? Lets ignore the fact im shaking ansld about to pass out. I just feel alone.