Don’t know how to deal anymore

I’ve been dealing with a possible rheumatic disease and do go to see a rheumatologist April 1st. Anyways I just moved out into an apartment in January with my dog and it’s been pretty hard for me. My dog was attacked and had some other things going on which caused me to spend almost $600 in vet bills on him. I also had a couple other things that happened that caused me to go through the majority of the money I had saved up before moving out. I have enough to cover next months rent but don’t know how I’m going to make it afterwards. I do have a job that I just started but I haven’t gotten more than 16 hours yet and even though I don’t work a lot, I’m always in a lot of pain after I get off. This pain is so bad that it keeps me bedridden, It’s hard to get out of bed everyday but I’ve had to push through the pain and through the depression these issues have caused. I just don’t know what to do anymore because like I said I won’t be able to pay my bills working 16 hours a week and if I’m already struggling now I don’t know how I’d be able to take on a second job. Any advice or suggestions for things I should do?