Running Out Of Options

So, as I sit in tears fearing for what may come Tuesday, I'm in tears for another reason. I got my paycheck today, and I came to the realization, it is quite possible I will literally be running out of money soon. One of my greatest fears, and it's right around the corner, because my next check will be even worse. The check I got today will cover my rent and one of my loans. So, I already transferred more than half my savings into checking and I'm praying I won't have to use it all. I am supposed to travel an hour one way this weekend to go shopping for bridesmaids dresses this weekend and also celebrate and witness the fact my sister is getting rebaptized. I see dollar signs. I know it's horrible. But, I know with the group that will be there shopping for dresses, they will most likely want to do lunch or dinner. I don't know how I'm going to handle that yet. It will either be that I say I can't, and ask for my sister's apartment key or else I go with them and get water while I watch everyone else eat and I go hungry. I've already told myself I'm taking snacks. I can probably play off the one where I say I'm not hungry and then eat when I get back. It would suck, but I think it's doable. My sisters currently do not know I'm out of work without pay.
One of my sisters knows I've been sick (I think at least cuz Lord knows I've talked to her several times lately and she hasn't even asked how I'm doin soooooo maybe I'm wrong?? But I just don't mention it.). The other sister, I still haven't talked to (I've figured out tomorrow will be one month) since she completely betrayed me by telling my dad about the symptoms I've been having. She is supposed to be there tomorrow. I still have a headache, and I am not going to be in the mood to deal with her. I warned her ever since this started that if she has not apologized to me by the time I see her to not expect me to be okay around her. I have gotten no apology. It's really hard for me, because I definitely don't want to ruin this day for my other sister. I told the older one (one I'm not talking to) that the whole reason I tried to work this out before was that we were supposed to see each other in a couple days (this was a month ago) and that I didn't want to ruin it. Well, that day ended up getting cancelled for whatever reason. So here we are again, and I wonder how it's going to go. I've just had it from her. She is not the person I used to know, and I always pray she will come back, but until her husband stops letting her walk all over him (no, I'm by no means saying I want him to mistreat her) then she will never learn she can't talk to and treat people the way that she is.
Anyway, I'm supposed to work on Monday. I have told myself I'm really going to try to go in. It will really be challenging, because it will mean I will work all night and then not be able to sleep before an appointment that will probably be a long while. Sorry, but I don't do well if I've gone nearly 24 hours without sleep. On the other hand, however, I AM GOING TO RUN OUT OF MONEY!!! I have even thought of where I would turn if I really find out I can't pay my bills. I have always been so financially responsible, and so me asking for money is something I've simply struggled with. The only people I found that I could even consider asking would be my parents, even though I know that would be admitting failure. The problem is that they don't have any money themselves. Soooo what is a person supposed to do? I already haven't been goin out much (for months and months and months...I get out occasionally). I've been restricting my driving to save on gas for several months. I mean, I can't very well get a loan to pay loans. That'd be like me getting a credit card so I can pay off debt. Um. Stupid. But really, what is a person supposed to do?? I have about $300 that I can take out of my other bank to try to help. That will almost pay one of the bills that I have. If I can't work, I can't very well start working the overtime that I'm already planning on working for at least ooooh I don't know months. I'm on the brink of telling my best friend in the whole world I can't be in her wedding next month. I still have to get my dress hemmed which will be more money. I still have to pay her parents for the hotel. I still have to have the gas to make the 4-5 hour trip ONE WAY.
All of this on top of me being stressed over what they may find physically wrong with me on Tuesday?? Somebody please tell me how I'm supposed to cope with this?!??!?!?!?!?!?!??!