I feel desperate and alone. I need help.

I'm a 24y.o. male. I just moved to a new city after graduation. I don't have any friends here. I learned I have rheumatoid arthritis. My knees and my back pain is killing me. I'm about to get fired from my job because I couldn't attend thanks to the pain and inflammation. My girlfriend of 4.5 years just left me. We've been living together for the 4 years of my life except this month. I'm really depressed and I'm not able to get professional help in any way. I used to cry really rare, once a few years but nowadays I'm crying a few times a day. I feel like my life is ruined and I studied engineering for shit. Spent best of my years for a fucking diploma paper and now i feel i'm almost paralyzed. I tried using connected2me and tinder shit for the first time for some social interaction, didn't work. I don't know how, but please help

Edit 1 (Aug 18 morning): thanks for all the replies, i'm omw to my doc today. I'll answer all the comments and get you updated. My diagnosis is really recent, it's been ~1 week. Edit 2 (Aug 18 evening): My update after the doc https://www.reddit.com/r/rheumatoid/comments/6ucib2/i_feel_desperate_and_alone_i_need_help/dltin43