Rant/I need some advice

Okay so I’m about to go on a long rant

Me and my boyfriend been together for 5 years, we’re both 21. We met online through a mutual friend and was on a long distance relationship for 3 years but we always visited each other for that time. He finally move in with me the summer of 2017 everything is great until he got sick really bad and found out he has diabetes. He doesn’t have insurance and we have to pay out of pocket for his medicine. Last year he was in the hospital twice because he had diabetic ketoacidosis and it was a horrible time and he’s barely able to go to work because he’s always feeling bad(we work at the same place) I have to work longer hours sometimes to make sure we have enough money to pay rent and buy food and his medicine. Sometimes his mom helps us out or my sisters but they can’t always help. Right now we’re late on this months rent and I can’t ask them to help me this month cause they helped me last month. Tomorrow is the 4th year since my mom died and I’m so stressed out right now I’ve been crying for like the past hour because I don’t now what to do and I have no one to talk to, I love him with all my heart and I know we’re still young but I want to be with him forever, he’s the most amazing sweetest person I ever met and he makes me happy I know this is just a hard time for us. I just don’t know what to do